Brrrrr, I'm getting shivers down my spine and it's lunchtime on a sunny day...blooming air conditioning in this place!

Now, I am a sceptic, a cynic, and atheist and generally pretty honest. But I can't explain this. When I moved into my first house (extremely crap rented accommodation in my first year at university. 1994 - oh-so-long-ago) I was moving in with 4 other girls and 2 fellas. It was a semi-detached house just off the Lisburn Road in Belfast. On the first day I went up with my mammy and daddy and wee sis (two years younger than me) to drop off my belongings. I went into the house for the first time, and heard someone walk across the bedroom upstairs. I called out thinking there was someone else there - my sister vouched that she heard it too - but no one replied. I checked all thye rooms but no one was home. I put it down to the people in the house next door being really, really loud.
I remarked on it later on when the others had moved in. One of the guys, Rory, gave me a funny look. Now he was a big, strong bloke and though quite fond of smoking dope and thus prone to being in a semi-stoned state every evening, a fairly credible guy. He said that the only person next door was an old woman whose carer/health visitor brought her downstairs every morning and then up again at night as she couldn't move about much on her own. Sure enough, we saw her later. It was later on I found out about the other weird things... In the fella's bedroom, Rory says he woke one night to have his arm being held firmly out, being pushed down. He says the room was pitch black (normally a streetlight gave it a bit of a glow). He thought it was his room mate mucking about, but he says that when it stopped after a bit, he turned on the light and the room was empty.
Strange arrangements of objects started appearing - a shoe with an apple and a coin balanced on top; jars set upside down balancing in the middle of the floor,etc. We would all be sitting in the living room some nights and we would hear all the dishes in the kitchen moving across the worktops. People heard footsteps. Rory swore that chairs were pushed up against doors when he tried to open them. One night, sitting with one of the girls and her boyfriend in her room beside the bathroom, they both looked at each other and he said "did you hear the toilet flush" (unusual in itself - you had to fill the cistern with a hose from the bath - bleeding student accommodation!). She was plae and said "yeah". I heard nothing. Then one of the fellas brought his wee 3-year-old brother over to the house one day. The child started talking to someone in the bathroom. We asked who he was talking to and he replied something along the lines of "Mr Kinsale. He lives here."
Strangely, I stayed in the house on my own some nights, and it wasn't too bad (but now I'm more of a coward). Only once did I wake up with fright. I'd been dreaming that someone was in my room. I was crawling to the end of the bed to get away from them. When I woke up, sure enough I was at the end of my bed, soaked in sweat, and I couldn't shake the feeling.
I've always wanteed to go back and ask the next occupants if they had any trouble (we moved into a much nicer house after a year). A few of us fell out and we don't keep in touch, but I met Rory a few years ago and jokingly asked him were they not all messing about, and was it just a big joke. He looked straight back at me and said "no, it happened".

As I said, I don't know what to think. I'm highly suss about things like that, but I do think that we don't know all there is to know about how the universe works, and we don't know all there is to know about how the human mind works, so if the strange things didn't happen by human hand, then I'm chalking it up to something that we can't yet explain. It was enough to convince me however that people are subject to these types of experiences, and whatever we attribute them to, many people will swear that they do actually happen.