I’ve played the game all the way through with no problems. It’s been a couple months since I last played, and I thought I’d start a new save file. I started the new file no problem and played for a little over an hour before the game started becoming incredibly slow switching between the map and play screens. Eventually it froze completely. I restarted my console to continue playing, and the xbox would whir a couple times before doing nothing. No error screen, as if no disk was in the disk tray. I put in a different game and it worked fine. Now I cannot get Assassins Creed 2 to start at all. My console won’t even recognize a disk is in the tray. The disk is unscratched, and I have 3 gigs left on the hard drive.