The events you describe pado, seem to be hypnagogic and hypnapompic experiences, mainly sleep paralysis. It's scary, however not that uncommon (simply put the brain misfires sometimes) but definitely not paranormal. 

I personally experience hypnagogic and hypnapompic experiences, mainly auditory (hearing voices and sounds) and some EHS and hypnic jerks. Some have visual experiences and some a bit of everything. And again, it can be scary and disconcerting and it's easy to interpret as paranormal, but isn't. 

Here are a link to the wikipedia article on the phenomena, which is pretty good and has some good links: http://en.wikipedia.org/wiki/Hypnagogia

This does not of course mean there might no be paranormal phenomena in play, of that we do not know, but your experiences do fit the bill on hypnagogia and until there is some evidence of the contrary or other experiences that indicate that, there is no need to reach for paranormal explanations.

Some on this board wrote in a thread that any experiences within 10 ft. of the bed should be taken with buckets of salt and I think that is good groundrule and wise approach. Our mind do play tricks on us and when we are tired or on the brink of sleep that is truer then ever.

And even when not tired, the night makes things different. Anyone who has experienced the wolf-hour knows that the world can seem a strange place, or a place for strange things, at times. But it's usually our mind and brain who is the home of the strange and weird…

Well, I find carbon monoxide or natural gas to be a stretch, but not impossible. But personally I think it is all psychology and mistaking correlation with causation. First off, from what I gather it was a dorm, where I suspect many students have slept and studied during the years. And as I wrote hypnagogic and hypnapmompic experiences are not that uncommon, so it is likely multiple people who once slept in that dorm has had one. 

And then when the stories gets around people start to interpret the dorm as the cause rather than then brain of the individuals involved. However I do believe that any place with many people sleeping in them over a long period of time, such as a dorm or an apartment building would have a similar phenomena. 

That's why I really don't find multiple reports of what is classic hypnagogic experiences much of an indication of a paranormal phenomena being in play. For that I need to have some other experiences or incidents occur; voices,  apparitions, poltergeist activity or anything that does not involve the bed. Something more tangible, over time and in multiple events.

Although it was scary for those who had the experiences, there is no indication that it was more than a good campfire story. Noone seemed distressed or in need of any help, other than sharing the story and thereby handling it, and furthermost realising they are not alone with it.

In the end, all we have is personal experiences form quite some time ago, told and retold and being subject to others experiences, which makes it impossible to really know what actually happened. And since the teller does not seem to be distressed or in need of help now there is no cause for any investigation. Which explains the lack of interest from paranormal investigators.

It also does concern me that you pado feel the need for paranormal investigation, since that leads me to believe you want it to be a haunting rather than openly and unbiased take a look at the events. If you want it ot be a haunting of course you interpret it as paranormal. Confirmation bias does seem to be at play here.

Lastly, and this is worth pointing out, pados experience is a perfect fit for hypnagogia, it is about as classic and on the mark as it can get. That other people had the same experience proves nothing else than that hypnagogia exists and is a proven phenomena with certain characteristics and that it is not that uncommon. In fact, pados story ends up being a strong evidence for scientific explanations to strange experiences  rather than paranormal explanations.

Edit: Found this quote by the philosopher Francis Bacon which should be pondered in connection with presumed paranormal events (not least the one in this thread): "The general root of superstition is that men observe when things hit, and not when they miss; and commit to memory the one, and forget and pass over the other." 

As dr_peter_wenkman points out and as I stated earlier let's not confuse matters, by interpreting correlation as causation.

I quote myself: "However I do believe that any place with many people sleeping in them over a long period of time, such as a dorm or an apartment building would have a similar phenomena. "

Hypnagogia is fairly common, and when lots of people sleep in the same building it is not strange that a number of them have hypnagogic experiences. I'd bet the same thing has happened in the apartment building I live in, I know for sure I have had hypnagogic experiences and I'm sure some of my recent neighbours or previous neighbours have had the same. And I'm certain if I polled them, they would bring up similar stories to the ones pado heard.

If a number of people living in a building with many people living there have luck in games, does that mean the house is a lucky charm? No. Superstition we'd call that. I can't see no difference with hypnagogia in pado's case.

And as for hypnagogia being farfetched, well, if you really want it be paranormal it is, confirmation bias that is called. Contrary to what you seem to think hypnagogia is a well-known, proven phenomena with plenty of research done on it and above that fairly common. Just because you didn't know of it, doesn't mean it's obscure. Every serious scientist, psychologist and doctor who works with sleep disruptions knows of it and on a daily basis meet people who have hypnagogic experiences.

So what are you gonna go for, a proven phenomena backed up by stringent science or your own subjective feelings (and desires)?

The reason I hammer the subject is because there is a number of cases of people in the paranormal field who has misinterpreted hypnagogic experiences as paranormal and subsequently made a career out of it. Debbie Constantino for one. And that is downright sad, firstly becasue they fool themselves but secondly because they fool others and thirdly because it makes the paranormal field a joke, filled with self-serving people who can't distinguish black from white. Which is a big disservice to any actual paranormal phenomena out there and downright disrespectful to the same.

It bugs me that pado can't accept her experience was natural and common one, but keeps grabbing for straws. Admitting to oneself one probably did not have a paranormal experience might be sad or boring, but it does not mean paranormal phenomena don't exist, just that you haven't experienced them. Yet. 

I have had experiences that others would have interpreted as paranormal, but that I due to critical thinking and knowledge know have natural explanations. Does that make my life boring? Hell no. Quite the opposite, because it makes me vigilant to experiences and makes me see what others don't see or simply ignore. And furthermost, it reinforces the wondrous nature of the universe.

pado said:

Okay, I'm starting to accept it. It's not easy after all these years. So what causes this sleep paralysis? Is it only the disruption of your sleeping cycle?

Pado,

The sleep cycle theory I mentioned is based on personal observations of my own experiences. The wikipedia link (from above) states: "This happens when the REM atonia sets in sooner than usual, before the person is fully asleep, or persists longer than usual, after the person has (in other respects) fully awoken."

I'm not sure why this happens to me when I nap at the wrong time. I can tell you that it was so repeatable that I intentionally avoid taking naps in the early part of the day no matter how tired I am.