I have a nano, well currently its still sitting in the back of a puralator van on its way from being replaced! I had it running linux for about 5 months and then when I tried to uninstall it the partitions got all messed up and it went from 4gigs to 4 megs. I tried EVERYTHING, even the dudes who developed ipod linux couldnt elp and they sure tried.
So I sent it back fearing it would cost me since I tampered with it. However, I guess Apple couldnt tell because they are replacing it