there will always be bugs. They can test all they want, but when a sh*t load of people are playing it, EVERYTHING will be exposed. I guarantee microsoft tested and tested, they probably pay a group just to test it, and they didnt find the problems. Happens all the time with bugs in PC games..and madden (not sure what other ps2 games).
mm didnt have a problem with his ps2, and hes an all knowing god, but after having to call sony and go through all the bs of updating my ps2 cuz it stopped reading games, then later dieing, im waiting till the second bunch comes out.