I went on xbox live 3 days ago and downlaod a update file for nba2k7. ever since that my xbox360 dvd drive does not read all my backups well. I just tried to play Fifa 07 and it keeps saying unplayable disc. That game has never given me any problems before and its not an old disc nor is it dirty or scratch. I think that update did something to my dvd drive> I might have to flash my drive again. Too bad cause i did not want to have to open my up again. Any ideas anyone?