I have had my XBOX for just over one month and have a number of games which play with no problems, however, I recently bought Ninja Gaiden and when I insert the disc it either fails to load, tells me I don't have the DVD kit installed or a message appears to inform me that the disc may be dirty or damaged. I have returned the game twice to the retailer and each replacement game has the same loading problems. I also recently bought Burnout 3 and the game freezes on occassion and I have also had the same message about the disc being damaged or dirty. I also returned theis game and the replacement has a few glitches, although it is not as bad as the first copy. Can anyone tell me if they have simliar problems or if it could be the XBOX and not the games that are the problem?