i don't know what i did, but the game DDR 2 Ultramix is make me trouble too (before i was playing fine with this game), the same thing like goldeneye, appears the xbox logo a then konami logo (goes a little more far that goldeneye
) and then in the next logo stay freeze. The firts thing i do is delete all de files from the HD of mi xbox on "E" partition, (TDATA, CACHE and UDAT) i donīt know why?, but the both games now boot perfectly, somebody can explain me, what happend?