ok.i was playing call of duty 4. online. and at the end of a game the scream just went black. wen i pressed the ps button the XMB still came up. i could send messages and things like normal. so i quit the game and it froze completely. then the ps3 ade two beeps and went blank. so i turned it off at the back and wen i switched it back on.it signed in like normal. but it didnt read disk. so i took disk out and wiped it etc i then read it. so i tried to start a game but now any disk i put in it just freezes. sometimes as soon as it starts other times just before a game starts. then my SIXAXIS wont connect without cable anymore. PLEASE HELP! WAT DO I DO? is it just overheating or wat?