I noticed the other night after my session in Rock Band 2 on my 360 came to a skreetching halt that my disc is cracked around the center. Now the only thing I can figure that may have caused this is pulling the game in and out of the case so much. Outside of Halo 3 it's my highest played game. I bought it brand new, never have lent it out and it always goes back in the case after playing. I wonder if MTV Games or whoever would replace the disc? Good thing I can DL the game to my HDD otherwise I wouldn't be able to enjoy RB2 anymore.