Okay, so I have two types of Dual Layer discs, both are Memorex, that I have games burned onto. Today I log onto my xbox and there is an update, I update my xbox, and when I put in certain burned games, they won't load, it says Disc Unreadable. This certain memorex disc won't load any games burned on them, I have Halo: Reach and COD: Black OPS burned on these memorex discs, and I've never had any problems playing either of these games before today; live or offline. I was playing Reach two days ago! I tried reburning black ops onto another disc of the same type, no scratches or smudges on it, and still the same thing; disc unreadable. now I'll put in say Fallout 3, which is on a different type of memorex disc, and it plays fine. can anyone shed some light on this? I'm extremely flabbergasting.