limbo43 is dumping a lot of Xbox USA stuff, but he's getting some different results than existing dumps, which leaves me worried about the different dumping methods that are used: Whether or not Xbox Backup Creator is a safe dumping method, and if FreeCell dumps discs correctly (without the Kreon drive injecting any data that shouldn't be there) regardless of the drive's (unlock) state.
The first one that wasn't matching is Need for Speed: Most Wanted: Black Edition: http://redump.org/disc/50146/
The previous dump by h0lylag was changed to red status because it was supposedly bad.. without a real confirmation or redump by either dumpers. I've sent h0lylag a pm, but I don't know if he'll ever be back to read it.
We really need to determine which of the dumps is wrong and what's causing the difference (and possibly find a way to detect bad dumps), before we end up with hundreds of potentially bad dumps.