I had one definate error playing 2011. I viewed the replay over and over and couldn't fathom how the offside was given.
Kind of realistic though no? This was ML so it didn't affect online rankings or anything, just my ML status.
I think maybe Konami could implement more of a random factor into ML where it was more obvious that the officials were flawed from time to time. Penalies for non fouls, off-sides given when not or vise-versa etc etc.