Ok, so I, along with other people, have started to get the "unplayable disc" error with every type of media (DVD, 3 origional games that worked before, and CD's). The funny thing was, I was playing halo 3 (limited edition) and left it in the xbox overnight (I havent been playing any other games) I went to play it again one day and got the unplayable disc error. Well wtf? I didnt move it, nothing was touched or anything.... Anyway, Im assuming I need a new DVD drive. Are there any hardware limitations to swapping out the drive, like compatibility issues?