So I put Oblivion on today, looking forward to Skyrim coming out next month. I had been playing on it an hour or so, and died, so I reloaded a save, but it crashed on the loading screen... okay, I thought, Oblivion does crash from time-to-time, no big deal. I reloaded the game, and tried again, it did the same again. I removed the disc and went to wipe it with a soft cloth as recommended by Xbox troubleshooting guides, but I noticed that on the disc surface, a curved scratch spanning most of the disc had appeared!
I put it back in, and as the game was going to the title screen, the Xbox said it couldn't read the disc, and asked me to remove it, clean it and try again, so I did, but now it won't load full stop, it just says it can't read the disc (unsurprisingly - given that scratch).
What can I do now? Surely it's not normal for an Xbox 360 Elite to randomly mutilate a disc, and it's the first time it's ever happened to me in the 10 months I've had the console. I've never had one problem with the console in the past... am I entitled to a replacement disc from Microsoft?