At about 9:45 this morning, I opened my front blinds and saw the trunk of my lude was open. When I went out in my robe, looking very confused, my neighbor came and told me he saw it closed at around 6am, but was later open. He thought it was odd, but I'm always messing with my cars, so he apparently didn't think it was that weird.
Weird parts:
1) Everything is still in the car.
2) No sign of forced entry
3) I have a paging alarm and it doesn't seem to have gone off (though just opening the trunk doesn't set it off, it seems)
4) My trunk is shaved, so there is no key hole on the outside. The only way in is through the interior release or fold-down seat.
5) Probably over a year ago, I went out to my old Celica, which had no alarm, and the stereo face was on the passenger seat. I did not even know the face came off of that stereo! So, someone had been in the car, and not taken anything, probably because they saw the flip-down face revealed a tape deck

I know I wasn't just imagining it, because they also yanked some of my EMS wiring out of the connectors, so that the car wouldn't start without re-assembling the connectors. They probably thought this was some stereo equipment, but couldn't make heads or tails of it, so left it.
So, either:
1) I left my trunk unlatched and it stayed down for ~12 hours, then suddenly popped up (it's a base model with a spoiler, and the trunk barely moves up when it's popped, because I doubt the springs were ever adjusted)
2) Something is wrong with my trunk and it popped randomly after 12 hours of non-use
3) Someone broke in and took nothing, for whatever reason. Maybe what they saw was too big, or they were scoping it out for later?
I have no idea why someone would leave the trunk open, so I'm curious if anyone has had their manual trunk just pop open for no apparent reason? I don't see any evidence of someone putting a wire/slim-jim down the glass to pull the trunk release...so, is there some known trick that people use to do this?