Recently, I've experienced a scratching on my Gears of War game disc. It plays up until the last chapter of Act 2 on any mode. Then I get a message that states that the game disc is unreadable. I am able to get this fixed for free though, so there is no problem.

A friend of mine has had his TimeShift game scratched by his console as well, and this issue has also occurred as shown by GameSpot's news report on the lawsuit claimed by Jorge Brouwer ( http://www.gamespot.com/news/6174043.html?tag=result;title;1 ). I later found out that the problem can often occur if your Xbox 360 is picked up from its location and moved to another location while a game disc is remained inserted. This may cause the mechanics of the disc readers within the system to have unwanted contact, scratching the disc. It is best to either take the game out of the system before moving it or to move your console on its side, right side facing up, without bumping the console up and down even by accident.