Ive been having this problem where there is a line in the middle of the screen when playing both the Fightnight Round 3 Demo and the full version of Condemned however most prominent in the FN3 Demo. I ended up calling up the tech support and they said it is a defect and that I would need to send it in. Figured I would offer this little heads up for the rest of the 360 CAG owners. Im actually rather frustrated by the whole thing but I guess its not that big of a deal =\.