I have heard that playing Final Fantasy 13 is now crashing systems. It begins with in-game freezing and then your system will no longer read discs of any kind. I have friends who have already experienced the problem and there is a guy on Youtube that had the same problem and has posted vid to tell Square and/or Sony to fix it! Here's the link. Sony's about to have a lot of upset customers.
This problem affects any system, including fat PS3s, slim PS3and 360s.
If you have the game, stop playing immediately. You will know if the game will freeze if, while in a battle, the music cuts off. I have no idea what the problem is and neither do Square or Sony. Hopefully, there will be a resolution soon.
Thought I should warn you guys. Peace!
Razer