My system completely died right after being banned from XBox Live as well (weekend before last, on 12/16 I believe), but it's got to be a coincidence. It was acting up before so, but it was much worse right after the ban, now it's throwing 0103, E79, and 0102 at me. Still though, messing with the washers a few times will eventually get it to boot again, at least for a small amount of time. I gave up on it and bought a new Arcade 360 (since I already have the HDD and whatnot). I'm not going to mod this one, since I need to be able to log into Live to play all my old DLC and XBLA games that I bought before the new system. It's not worth the risk anymore, just to play backups, I'll just be sure to take really good care of my originals. Hopefully they all still work.