I have had the same problems. I have a slim ps3 that is a little over a year old. Never had a problem with it. I was playing skyrim when it randomly kinda froze. When I say kinda, I mean I could still hear music and some of the sounds. I pressed the in game menu which took quite some time to pop up and then I just turned it off. I attempted to play MW3 and it would freeze just going into the multiplayer menu. Sometimes before I would get there, sometimes after it loaded up slower than normal. I emailed playstation they sent me through steps of restoring the file system in safe mode, which seemed to work great...Until I tried to play an mw3 multiplayer match and once again the screen goes black. So I did a hard drive wipe...nothing it still does the same thing. I did play a game of madden last night and it was fine though. Confusing. And enough to piss a man off.