everyday i play around 4 hours. but 1-5 times in the 4 hour span i experience a framerate problem that is liek 3 seconds. i play nba 2k9 (disk) and i experience it. on the motorstomr demo (no disk) i experience that on whne i jump. it happens now and then. i can’t say frequently, but it happens and that worries me. how do i fix this problem? is my ps3 defected?