I'm really, really sorry about this. I moved this last summer, but someone (while in the process of moving), broke into my old place. Some things were taken, but the bigger feeling was that creepy sense that someone had broken in.
I'd file a police report, too, although it may not do any good. I guess it depends on the police. In my case, I filed a report, but, as far as I could tell, they did nothing.