Underlying Microsoft’s Xbox update that allowed you to boot up your console straight into a disc-based game was a very nasty trick. Unsuspecting pirates found that after they updated their 360, their pirated copies didn’t work anymore. Arr, back to the PC for ye, scallywags!
PS: Next time you’re installing an update, be sure to check out the size; 7MB for such a small fix should have raised some flags 🙂