earlier that night on DOA I was playing in a room with KAGE and he had 99999 Disconnects listed in his stats... also he was telling me that some people achieved SS rank after just winning one match.
my point is
Anyway 100% of my glitchy experiences have either dealt with
A. The Xbox Guide
B. Xbox Live Games when communicating with servers
C. USB keyboards
or
D. the Xbox Emulator
or any combination of the above, things get even worse if you try to combined any of them, like using a USB keyboard in the guide while playing an Xbox live game online.... almost guaranteed a lock up
perhaps your problem is from one of those things?
What do all of these things have in common? they're all based on MS software...
Did you hear MS was making a vacuum cleaner?... it's the first product they've ever made that doesn't suck.