Barto, thanks for your support, but I have to comment on your thoughts. I doubt that putting the ring on would be a part of the curse. Firstly, Dumbledore is too smart to put a horcrux on his finger. I also think that he would recognize a spell telling him to do it. I believe the curse that took his hand was released when the hircrux was destroyed. Dumbledore's slower reflexes did not allow him to counter the curse quickly enough.

Hey all, forgive me if I totally miss what you guys are talking about, I have had so much homework and I haven't had time to post in ages! I am going to try and get back in the loop though, if no one minds of course!

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I doubt that putting the ring on would be a part of the curse. Firstly, Dumbledore is too smart to put a horcrux on his finger. I also think that he would recognize a spell telling him to do it. I believe the curse that took his hand was released when the hircrux was destroyed. Dumbledore's slower reflexes did not allow him to counter the curse quickly enough.

I agree with After the Burial here. I think Dumledore is far too clever to have put the ring on, he knew that he was dealing with a Horcrux. I believe that maybe the curse on his hand appeared maybe when he was trying to reach in and touch the ring from wherever it was exactly. He may have missed a spell and thought that he had overcome all the enchantments, so when he went to pick the ring up then there was another enchantment placed upon it. So he broke the Horcrux and then went back to Snape the fix his hand. He only put the ring on afterwards so that Harry would recognize it and get a sense of what was going on. Is that close to what you guys are talking about?

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Do you mean enchantments that make the Horcrux invisible? If thats the case, how would the person going to get it know that there is a Horcrux there to begin with?

If it was invisible, though I doubt it would be, then there would be signs. Like how Dumbledore got into the cave. Magic always leaves traces and whomever is looking for the Hrocrux would know the signs and still be able to locate it. I don't think anyone would be in the places Voldemort hid the Horcruxes if they weren't looking for them though, oh, I don't think there is a way to keep something invisible for that long.

QUOTE

So when they went to the cave,R.A.B. should have broken the enchantments placed around.But when DD went there wasn't much enchantments other than Inferi.So do you think once when we break the enchantment will it come back again or will it remain broken making it easier for the next person who comes there!

Once you break an enchantment it is broken, unless of course he would cast it again. This also kinds of goes back to the green liquid, when Harry and Dumbledore left the basin, it didn't refill itself, meaning that Dumbledore didn't understand the fact that someone had been there before and had put that liquid there. R.A.B. would have had to put it there for Voldemort, which is what I don'tunderstand, unless of course R.A.B.put the liquid back so Voldemort wouldn't know anything was wrong, in which case R.A.B. would have also repeated all the other enchantments on the Horcrux, meaning that there weren't any others. Of course then I get to how he knew that the green liquid was there,I mean, he would have had to have went back and brewed the potion again and then put it back unless he put the liquid there just because, not because Voldemort had first. In that case then why would he add a note inside the fake Horcrux. If that wasn't Voldemort's original protection then he wouldn't drink it, he would know that someone had already gotten to the Horcrux, unless R.A.B. was counting on Voldemort's curiosity. Ok, I just blabbed on for a long time and I am sure no one knows what I am talking about so feel free to ignore me here, I was just going off.

You all have interesting points. But maby you are over thinking it, maby rab out smarted DD and just put the potion in a caldron or somthing so that he didn't have to drink it? This is what i thought DD was going to do at first anyways. Still there may have been an enchantment on the potion so that it couldn't just be put somwhere else? I don't know,

As for the ring i think it was better protected. This might have been why DD was so dissapointed with the lockets defensses. Also as you have pointed out it was his wand arm that was damedge, maby the spell he used to break the horacxux backfired becaus of a enchantment on it?

Quidditch Rocks: I like your idea a lot of voldermort using a spell to try and destroy the horcrux but that spell backfiring on DD and him not having quick enough reflexes to defend himself.

I personally think that RAB must have had to be one of the few to help Voldermort hide the horcrux in the cave. I know DD said he liked to work alone but it does not make sense to me why not use help without telling them what they were helping him hide. I mean somebody needed to know the location of the horcrux I think because if voldermort was counting on being attacked he would loose his powers but not die so he would need another wizard like he used wormtail and harry to regain his body and probably to retrieve this horcrux.

Voldemort wants to be immortal. That is why he made the horcruxes. Dumbledore said that Voldemort liked to work alone. I accept this a fact. One of the reasons he likes to work alone is because he thinks he is superior to any wizard or witch. Since he does not trust his servants, and he believes them inferior, he would never entrust his life to one of them. There is far too much trust required to place your life in someones hands.

This is why he would not tell anyone about the horcruxes. That secret is the secret of how to kill him. Voldemort would never tell anyone how to kill him. Hiding the horcruxes would be a task done solely by Voldemort.

Yes, he did give the diary to Lucius. However, he did not tell him it was a horcrux. Lucius was also told to hide it until Voldemort gave the say-so. Anyhow, the point is that the secret was preserved. If Voldemort told anyone that he made a horcrux, he would have been blase about his road to immortality.

I agree. Voldemort was doing everything in his power to stay emortal, everything he could think of. He looked into all forms of magic, and even when he was still in school, he was questioning teachers about horcruxes. I cant emagine him telling anyone this vital element in his distruction, because he isnt completly emortal, their is a way to kill him. If he told a death eater, and the death eater was caught, and someone used veritaseum on him, he could tell the secret. And I dont think voldemort would ever risk this.

I'm back after a couple months...
What have I missed?

I had a thought today. What exactly is Peeves? I know he is a poltergeist, but what is a poltergeist? I don't think he was ever alive. So how did he come into being? Has anyone heard something about him that I never have?

So this says that poltergeist are michevious ghosts.In one the programs shown by National Geography about potergeist,they told that potergeist were alive and they died suffering so much.But why,After the Burial,do you think that they might have not been alive.?



I didn't know this piece of information which was taken from wikipedia.For full details click on this-http://en.wikipedia.org/wiki/Peeves

Phoenix, I cannot remember where I got the notion that Peeves was never alive. I think it was something from OotP or HBP. It was a passing comment in something that I read, but I have no idea where.

It is funny that Peeves cannot be evicted from Hogwarts. Filch is under the impression that he can be removed, if Dumbledore is willing. Fleur also said in Goblet that a poltergeist would be ejected from Beauxbatons "like that" if one ever entered.

There is a whole theory behind poltergeist, people have said that they have actually seen one. But After The Burial, your feeling is not that weird, i can't imagine Peeves actually being alive- he must have been a nightmare for his friends, teachers etc. Maybe we should start thinking about his death, though this is not connected directly to Gryffindor. But since NHN suffered to death too -having your head cut off and not totally is bad for sure-, we could discuss about this kind of death in general. Or change topic, hehe!

ok so the whole peeves thing i had always wondered! thanks guys! well it's my first time here so sorry if you all have already talk about this

i have been wondering if members from other houses can go into the common room of a different house like for example did cedric ever go into the common room of ravenclaw when he was dating cho? in the books it never says anything about it well that i have seen so i was just wondering

Actually, the books DO say something about it.

When they used Polyjuice Potion, Harry and Ron both entered the Slytherin Common Room.

I don't think there are any magical barriers that prevent members of one house from entering the common room of another, but the fact that there are passwords implies that it probably isn't allowed. I imagine that, if you want to spend time with someone from another house, it simply has to be done in a public area.

Oh sorry i haven't been in here in a while, again!! I haven't been on my computer much at all because its keeps shutting down!! Anyway what have you all been talking about when I haven't been on?

I think that any member of a house can enter anothers common room and the best evidence is in POA when Sir Gadogan lets Sirius in after he has told him the password. I think that the only reason that people dont go into other houses common room is the fact that the members of the houses would not let them in after all would a gryffindor let a slytherin into their common roon?? I mean house activities like quidditch are discussed in the common room and if people were going into other common rooms there could be spies trying to steal strategies. Also there are things like the house cup that each house participates in and one house member could try and sabbotage the common room to cause mayhem and have that house loose points. The common room is kind of like your room which at some points you like to keep private to only those who are really close to you.

Hey I was wandering. If you were a wizard and you were to face Voldemort what would you do? Personally I'd do the silent spell for Avadacadavra and kill him. And if I were put into Azkaban, I'd turn into my Animagus (a lion) and escape undetected. How about you?

ok those are good answers!
well if i were to meet voldy i wouldn't want to kill him death is to good for him! like DD said int the OotP there are other ways to destroy a man other than death so i'd destroy his ego! that is a sure way of destroying him and i think it's what he desevers

I wouldn't kill him right away, but i'd be really scared he'd kill me first. But i'd probably taunt him, then say BYE and kill him with Avada Kedavra aloud. So not exciting, i know.

Well, I'm new to this whole site actually, let alone this thread. So - hi everyone!:P

I don't really know what's going on except for the fact that someone asked: "If you were a wizard, how would you defeat Voldomort." So that's where I'm going to jump in!

I think that I'd probably black mail him for a bit - just to make him suffer:P Then after a while I'd find him and kill him in some dramatic way. It's got to be dramatic or there's no point!

Okay, I know that I am a Gryffindor, so please excuse this uncharacteristic comment. I would find a way to escape Voldemort. I am not foolish enough to try to fight him since he is likely more powerful than me. Until I am certain that his horcruxes were destroyed, why would I engage a fight to the death when my opponent cannot die?

I agree with After The Burial, I'm a Gryffindor too. But if I had to face him, that is, if my friends or family needed to get away, I'd create a diversion or even engage in battle if it came down to that. Of course I'd try some other means but if it came down to fighting him I'd try my best.

Barto, I like your avatar. Very nice image. Also, this is post 777 for me. That must mean something. Power of seven and all that.

Anyhow, I was wondering about the unused classrooms. In Goblet of Fire, it says that McGonagall gave the trio a place to practice because she kept finding them in unused classrooms. This could mean classrooms that were not currently in use, or a classroom that is rarely used (like Firenze's classroom before he was hired, or the room where Hagrid hid Aragog).

If the latter is true, it would imply that there are a great many rooms in Hogwarts that are seldom used. Voldemort, having penetrated many of the secrets of Hogwarts, would know about them. Now, do you think it is possible that Voldemort has used one of these unused classrooms (or rooms in general) to hide a horcrux?

Tom is more attached to Hogwarts than anything else. He was already planning on making and hiding horcruxes when he was in school. During his seventh year, why couldn't he have taken one unused classroom and started the initial preparations to hide a horcrux in it?

We know that the Room of Requirement is unplottable. Voldemort could have done this to his room as well during his seventh year. I would guess that he could have found a way to make sure that only he could get into it...a password or something. Remember, the entrance to the Slytherin Common Room looks like a blank wall.

i think that it is very possable that voldermort hid a horcrux at hogwarts... but i dont think it was in an unused classroom...the room of requirement is a good possability. i just dont think he would leave something as importNT AS A horcrux in an empty class room. but i do think that there is a horcrux at hogwarts.

I also think that Voldemort wanted to place a horcrux at Hogwarts. However, anyone may enter the Room of Requirement. Many students (but not all) learn that the Room of Requirement exists. All the house elves know about it. For this reason, I believe Voldemort would be wary about placing a horcrux in the Room of Requirement.

When you consider how Voldemort hid the ring, (meaning in the cottage where anyone could have gone, but would not likely go), I would not be surprised if Voldemort placed a horcrux where anyone had access, but would not go. The empty classroom seemed like a good idea.

I've never actually thought of that, it is a good point though i find some "mistakes" in it. For example, Voldemort created the horcruxes after he left the school and he visited it again only twice. So, it would be really hard for him to hide a horcrux in the school unnoticed, especially when Dumbledore was Headmaster. So, this kind of ruins your theory. Also, i believe that the school may have some kind of magical protection against dark magic as strong as this one. This is not a very strong argument but still, it could be possible. Last but not least, i don't think Voldemort would hide a horcrux under Dumbledore's nose. Yes, i agree that no one would look for a horcrux inside the school, but when it comes to Dumbledore,we must expect to have examined every possibility... But again. very nice thought!

What if the Basilisk was a Horcruxe? It fits in my mind. But there were other things we over looked. Ok so what we know is

Locket
Goblet
Diary
Nagini

So three more right? I'm guessing, something of Gryffindor's (Ex: His sword, His heir?) Harry and the basilisk. I'm probably wrong. But those are my guesses.

Hm...not really sure how this is connected to the topic Comet...I think we have discussed that before either here or at MOOOP, so maybe you should check the previous pages. Just, stick to the topic. Where do you think Voldemort could have hidden a horcrux? After the burial suggested Hogwarts and this is our present topic, so, what do you think about it?

I guess it's possible that there could be a horcrux hidden in the castle but, I kind of doubt it. Because wouldn't Dumbledore have found it? He made it like his life to find the remaining horcruxes, so I find it difficult to believe that there could have been a horcrux in the castle without him knowing. Not saying that it's not possible, just saying that I don't see a HUGE possibility in it happening.

I think it's very possible for Voldemort to have hidden a Horcruxe in Hogwarts. He's done it before. Also, Sirius Black got into Hogwarts without detection, I think Voldemort could definitely do it. He could have always gotten a teacher to do it

Good point...however, you need to know exactly what it is you're trying to find. (remember, when Harry wanted to find the place Malfoy was going, and he couldn't because he didn't know what Malfoy was up to) I doubt many students would know about Horcruxes, and therein would lie Voldemort's "cloak of invisibility" if you will---the students ignorance.

And Dumbledore would probably never even think about the possibility of a Horcrux being in Hogwarts because he was convinced it was one of the safest places to be. You know, that whole "its so dim-witted that its brilliant" and "its right under your nose."

I think its a really good theory, and may even be proved to be true!

Yeah, just like that dream Rowling had about finding a Horcrux in the fireplace

I agree. But it does have its advantages and disadvantages. For both Harry and Dumbledore, it could be the last place they look/ed. A Horcrux at Hogwarts? No way!

It also poses the possibility of it being found easily and being tampered with by a student. I don't think Voldemort placed one there, though. I think he didn't due to everything he tried to do in Chamber of Secrets.

I'm not really that sure if there is a horcrux at Hogwarts or not!! Because well Voldemort could either have got Draco or Snape to put one there but i agree with El Barto that a student could find it and tamper with it!! But there might be a place that no one knows about apart from Dumbledore and Voldemort and he could of told someone to go and put it there!! Because Dumbledore won't be able to get there now since he is dead!! Well thats my theory!!

As I posted that last post I was thinking about when Dumbledore stumbled upon the Room of Requirement. I'm not sure which book, but he needed to use the bathroom and took a wrong turn and found a bathroom that wasn't there before. Maybe there is a room that nobody else knows about apart from Voldemort, or somebody.

I am surprised that this topic is generating so much interest. My friends and I have discussed this so much that I expected everyone would have.

Adding a few more points to the topic. Alkisti, you said that Voldemort only started creating the horcruxes after he left school. He made his first one at 16. The diary had his 16 year old self inside, so I bet that it was made when he was 16.

You also said that Voldemort returned to the school only twice after that. I only remember the interview with Dumbledore. What was the other? Before we talk about that, I want to draw attention to a certain part of that interview. Dumbledore said something like, "Why do you come asking for a job we both know that you do now want....I don't believe you expected me to give it to you. Still, you came here. You must have had a purpose."

I think that purpose was to place a horcrux into Hogwarts. He would not have had time to give it proper protection. So, the protection must have already been there. This couldbe the Room of Requirement or the Chamber of Secrets. I do not think Voldemort would want to use other witch or wizard's magic to protect his horcruxes. He is too arrogant. For this reason, I think he must have had protection already in place. Hence, the hidden room or something like it.

I also want to point out that Voldemort is arrogant...exceedingly so. Do you doubt that Voldemort is arrogant enough to place a horcrux in Dumbledore's backyard?

remember he asked the previous headmaster for a job? well i can't remember the name right now but he did come back two times!
DD said in the 4 book when he was talking about the castle that he wouldn't be so arrogant as to say he knew all the castles secrets so i do think a horacrux is at hogwarts! i mean snape works for voldy right and snape started working at hogwarts a bit before voldy's downfall so maybe he told snape to hide the horacrux at hogwarts! i mean it's possible that snape didn't even have a clue what it was and was only following orders

remember he also made the ring a horacrux while at school when he killed his father and grandparents.
After the Burial: i also have discused this many times but still you can learn new things by discusing it some more!

That is true. Discussion can always yield new thoughts and directions. I was simply saying that I was surprised it seemed THAT popular.

Now, Voldemort did ask Headmaster Dippet for a teaching post, but I thought that it was right at the end of his seventh year. If this is true, then he had not yet left Hogwarts.

About the ring, we know he wore it during his seventh year. If it were a horcrux at that time, I do not think that he would carry it on his person. That is too much in the open and not really Voldemort's style.

About Snape, Voldemort probably trusted him a lot more than most when Snape first started teaching at Hogwarts. I mean, he had just passed Voldemort the information that would allow him to locate his greatest enemy. If he would trust anyone with a horcrux, it would be Snape....although I have reservations about Voldemort asking anyone to permanently hide a horcrux for him. With Lucius, it was intended to be released into the public eventually.

I don't know about Voldemort creating his first Horcrux at 16 AtB. All we know for sure is that the memory was of his sixteen year old self. We don't know when he created that diary. We saw Snape take a memory from himself (Snape's Worst Memory, OoP) and it was of his sixteen year old self. It didn't show him as an adult.

My take on why Voldemort returned to Hogwarts seeking a teaching position was he was searching for something that either he or someone else hid at Hogwarts. Something that would take a fair amount of time for him to find. If we are to assume Dumbledore is correct, and he usually is, both knew that Dumbledore would refuse to hire Voldemort. Perhaps, Voldemort believed, that after the refusal Dumbledore would invite him to look around the school again for old times sake. At which point Voldemort would be free to wander the halls unimpeded. What would be the purpose of Voldemort having his Death Eaters close by? Certainly not to tell them of his triumph hiding a Horcrux; he wouldn't have cared what they thought. He probably didn't want any of them to know anyway. But to bring something back, that's different. Of course, when Dumbledore revealed that he knew Voldemort's Death Eaters were waiting, it ruined whatever Voldemort was planning. He couldn't just start roaming the halls at that point.

There's a lot of stuff in the Room of Requirement forbidden stuff room. Plus, it's fairly large. Even if Voldemort knew exactly where something was hidden, it could still take a fair amount of time to find.

i thougt it was after leaving hogwarts i guess i'm going to have to check!
About the ring, we know he wore it during his seventh year. If it were a horcrux at that time, I do not think that he would carry it on his person.
it's true and plus he didn't have all the facts on how to make a horacrux forgetful me! lol anywho i just thought that he wouldn't want to waste such a good death

I
i think he did, he had a weird obsession with hogwarts and seeing as he couldn't get into the castle itself and seeing as he had a faithful servant like snape i don't think he'd wast the oportunaty
i really really do think that one of the horacruxs is at hogwarts and i think that an other one is at godric's hollow

Even before you posted, Elias, I began thinking about the diary. We know that the 16 year old Riddle came out of it in CoS. I assumed this meant that he made the diary at 16. This is probably not true.

Voldemort was in his seventh year when he asked Slughorn about horcruxes, right? If he was, he would have been 17. Clearly then, he could not have made a horcrux at 16 if he was learning about them at 17.

Elias, I had wondered why Voldemort brought his Death Eaters with him to the interview. I have no reason why they should. Your idea that he had a plan that was foiled makes complete sense.

JK made a big deal about that room in HBP. She described it in great detail, more so than other interesting locations. There were thousands and thousands of books, no doubt banned or graffitied or stolen. Could Voldemort have been looking for one of them. A heavy, bloodstained axe is mentioned. Does this have some significance? Or did Voldemort, like Harry, hide something that he now wanted to retrieve? [Harry] paused for a moment, his heart thumping horribly, gazing around at all the clutter .... Would he be able to find this spot again amidst all this junk? Seizing the chipped bust of an ugly old warlock from on top of a nearby crate, ... Did some other boy long ago use that ugly old bust to mark something he'd hidden in that crate? Maybe I'm reading too much into the story, but if it were me, I'd be looking in the crate.

i agree with my sis i mean snape has worked for voldemort for the whole time he was gone so i think he was able to get something of ravenclaw or gryffindor for him soooo ... maybe i'm a little nuts but i think he did get soemthing of Ravenclaw or Gryffindor

or maybe there was something in the room of requirement we don't know about that voldemort used arrghhh i just confused myself

I agree with you that the scene where Harry hid his book is discussed with a lot of detail. When JK does that, she is usually hinting about something important. I would not be at all surprised if the Room of Requirement did have greater importance. However, JK has also shown repeatedly that the obvious choice or idea is probably wrong and/or not going to happen. I think the Room of Requirement is too obvious.

Still, i believe that Dumbledore would have thought of searching the school. From the very moment he found out of horcruxes, he started looking for objects and places where Voldemort may have hidden the horcruxes. Also, the fact that he showed Harry both Voldemort's visits at Hogwarts shows something. Probably Dumbledore made a lot of thinking trying to explain his persistence(sp?) on getting a job at Hogwarts. My explanation is that he wanted to get to know better the school, its forbidden areas, be able to read all of the books in the library. Oh...something that i thought of now, may explain very well why Voldemort wanted to become teacher at Hogwarts.
Voldemort was very attached to Hogwarts and it would be a very good place to hide a horcrux. So maybe he wanted a post at the school so as to hide a horcrux there. What do you think about that?

Having free access to all parts of the school would make it much easier to hide a horcrux. Even so, Voldemort would not need months to hide a horcrux. If he came to Hogwarts, he had plans and backup plans.

Now, you want to hear a wild theory? Voldemort has a horcrux hidden in Hogwarts and Dumbledore has not searched the school because he thinks Voldemort never had enough time to do so. Details? I thought you'd never ask.

Dumbledore tells Harry that he thinks Voldemort came to ask for the teaching post because he could recruit students and he would be able to search the school for objects that belonged to the founders. Suppose that he did not want to search the school. He wanted to hide his horcrux. You may argue that he did not have time since Dumbledore believes that he did not have time to search.

Here is the weird part of the theory. Voldemort attacked Dumbledore and won. He then implanted a false memory in Dumbledore while he was unconscious. Dumbledore would have a memory of the meeting, but the true memory would be hidden beneath the fake. Dumbledore would not allow someone to probe his brain for false memories because he has other secrets he would not want discovered.

Lastly, in the memory Dumbledore showed Harry, Harry thought he saw Voldemort reach for his wand. He really did. That was when he attacked Dumbledore. He placed the fake memory there to hide the fact that they fought.

Sounds like an interesting theory, After the Burial. I don't have the time right now, but do you know that after Voldemort looked as if he pulled out his wand if Dumbledore decided they had enough to see and left the pensieve? I think it is possible that Voldemort attacked Dumbledore. Wasn't Dumbledore sitting in his chair? He wouldn't have enough time to reach for his wand. Then again, why wouldn't Voldemort just kill Dumbledore then (even though there were Dumbledore's supporters all around the school, but who would know if he left quickly?)?

I'm kind of new here, so i'll just add my two cents. I think it is also possible that Voldy attacked DD. And he had his Death Eaters waiting incase he needed help getting out of the school if people were chasing him. I can't decide if i think he was there to get the other founders objects or to hide a horcrux himself. There is a lot of questions about the Room of Requirement. I think that would be a good place to hide something you don't want anyone to find. And about finding the founders objects, where would you find them. Perhaps DD's office, the house common rooms, or maybe even the library? Any thoughts?

After the Burial: I dont know I think it is a bit complicated what you are trying to do. I think is adding a twist that is really not possible. Voldemort is afraid of Dumbledore and I think that if Voldemort had a fight with Dumbledore I doubt Vodemort would just let Dumbledore walk freem and unspoiled. It is a bit far stretched but it was a nice theory though. I still think that Voldemort may have hidden a Horcrux if Hogwarths from DD answer to karkoroff when he said that he could not even think about knowing all of the secrets Hogwarths held.

After the Burial, your theory is very well-thought and it could be true. However, there is something that keeps bugging me. I have thought many things about it and here are my conclusions:
1)My first point is something that has already been said. I am not quite sure that Voldemort would leave a part of his soul in a place where everyone could tamper with it.
2)As we have already realised, Voldemort used very strong and dark spells to protect his horcruxes. This was obvious with the locket. So, he must have hidden the horcrux with very dark magic and in a place out of reach. How would he have time to do all that? Even if he attacked Dumbledore...
3)...which brings me to my third point. It is easy to trick wizards like his grandpa or a houself, but playing with Dumbledore's mind is very hard. I believe we have witnessed a scene like that at OTP (book 5), in the ministry of magic when Voldemort attacked Dumbledore. Plus, as someone above said, he could have killed him OR make him hire him.
4)Voldemort needs to hide his horcruxes in places where he could go at any time, like the cave which is a place far away and out of reach. Can you imagine him going to Hogwarts to take his soul back? It seems impossible to me.
All these make me believe that Voldemort may have wanted to hide a horcrux there but his not-getting-hired ruined his plans...
Ouf, this drained all of my energy out of me...

I'm not saying I agree or disagree with your point, I'm just saying that there is always that possibility that it does happen...or did happen. There are many theories out there that appear as though they make no sense but when you read them and sort of think outside the box, they make more sense and start to come to life.

Potterfan, when Voldemort had his interview with Dumbledore, he had not yet revealed his intentions. He was not yet revealed as the criminal that he is. If he attacked Dumbledore, he would have revealed his intentions sooner than he intended. Also, we do not know when Voldemort started to fear Dumbledore. He was probably cautious around him, but his fear may have spread from Dumbledore's efforts to fight him after he came into the open.

alkisti, Voldemort would make sure that his object and room would be well hidden. It would be an out-of-the way location. It would not be easily tampered with. About the dark spells, he had plenty of time when he was a student in Hogwarts. Also, if Sirius could break in, why couldn't Voldemort? For your third point, he was not yet in the open. Perhpas he was still young and arrogant enough to not take the proper caution with Dumbledore. Now, why would he need to be able to reach his horcruxes? The only reason is if he wanted to move it from somewhere. If it was hidden well enough, why would he need to do so?

Do I think that he wanted to place a horcrux at Hogwarts? Yes, I do. Did he hope to put one there after being hired? Probably. Did he have a backup plan? Why not?