Too many of 'em, making the game unplayable to all intents and purposes. On average I report (through the xbl Submit Complaint system on 360) at least 2 per game, often more, very very occasionally less or, glory be, none at all, but literally you can count those games on one hand over the last month or so.
What's to be done? Is it a lost cause, whereby hackers outnumber genuine players trying to genuinely play the game they bought in the way the game is intended by it's publishers to be played? That's a horrible thought, might as well bin the 360 if that's the case.
Any thoughts or input much appreciated