Wasn't long before the HURR sony fanboys raced into the thread audaciously claiming "you shoudz boughtz ze ps3 dumfuks" seriously you should broaden up your question, do other games show the same problem, if not, then the disc is most likely damagedm even tho it might look clean, most of the time the disc layering can be damaged, look around the edges of the disc to see if you have any scratches, try cleaning the disc and then try. If it still doesn't work, try another copy, if the problems persists you've most likely got a misaligned/dirty laser.