Ok, I was speaking to Zimbo tonight and mentioned I got an email saying my copy of MW2 has been dispatched via courier. So That means it could be here, tomorrow, sat or even monday.
Zimbo did say something about Infinity Ward banning users using before release date. I've checked this out and that applies only to people using a pirated copy on the 360. For anyone who has managed to get an early retail copy they will reset the leaderboard on the Nov 10th.
So just a heads up, if you get it before the 10th then no point uping the ranks as you'll be set to 0 on the 10th. Private games anyone?