Hi, I'm new posting here, but I've been coming here for awhile. I just bought a new Xbox 360 and am pleased with it so far, except for one problem. Whenever I play Forza Motorsport, (after I did the backwards compatability thing) it will tell me every once in a while that "there is a problem with the disc, it may be dirty or damaged". I am now on my second "used" disc and i cleaned them both and it gave me the same message. Am I the only one this has happened to? (oh and i did use the search). Oh, and a new problem I just found, when I go to paint the car, some weird just out of nowhere vinyl type coloring apears on my car and I can't get rid of it.