Yes, cause M$ banns the consoles Serial number and online hdd key. Not a gamertag.
My researches are continuing.
One of them was playing on XBC (Halo 2 of course) and he did not get banned. His console is v1.1, 40GB HDD, TSOP split. He is using EvoX M7 bios.
The other one has a v1.3 and he's using X2 4976.02 on homebrew 31 wires, changed HDD. Banned!
Hmmmm... most of them has got banned for playing H2 on XBC (but not everyone- as you can see). Unplug the internet connection when using some M$ software on your Xbox and the chip is on.
I'm almost sure that the new games spy our consoles.
Leave the d0/LPC area, ppl
Report the game titles you were using lastly, until you've got banned.