It is normal with the ps3 slims. Happens, even with brand new consoles if you play long enough. The plastic gets hot or something I guess. Cant really tell. There was a thread here about it...did anyone experience a cracking sound coming from ps3? even when ps3 is not running? mine did sometimes it does even when it is not running. a weird crack sound...a little teasing for me..last night at around 4 am when i was sleeping a crack sound came out of my ps3, i got scared and i thought that dead space creepy horrible creature is trying to come out