Yesterday I was doing the UFC Personal Trainer 60 day cut weight program. When it got the tire flips, the game appeared to be stuck, like it froze or something. I waited for a minute or two and it was still stuck. I turned the console off and checked the game disc for scratches and there were none. So I tried to play it again, when it got to he tire flips it stopped again. Does anyone out there know why this is happening?