Just an FYI that M$ has started another wave of bans for modded xbox's. Reading forums they have gone as far as banning consoles with aftermarked controllers and fans etc. I'm sure the majority of bans stem from flashed drives.
Anyone looking to buy a used 360 should be extremely careful in the near future as modders will be looking to unload there banned system.
On that note i'm also looking for someone with a banned/modded system who is looking to unload it cheap. Paying $100 for the system with power brick (No controllers)