Though Microsoft has previously stated that a reported problem where Xbox 360s may be scratching game discs was relatively rare, it's apparently common enough that rental agency GameFly has an official policy on the problem
. From Gamasutra: "We have received reports that certain XBOX 360 consoles have caused damage to GameFly videogames. Unfortunately, we have been notified that you recently returned a damaged XBOX 360 game. As a precaution, we have removed all XBOX 360 games from your GameQ. Please contact Microsoft at 1-800-4MY-XBOX. Please do not rent XBOX 360 games until you have resolved this issue. In the future, should GameFly receive XBOX 360 games from you that have been damaged, you will be charged a replacement fee."