I've gotten a wide variety of errors while restoring on multiple PCs such as 9, 1600, 1621, etc. The furthest it goes is past the 2.2.1 restore bar and iTunes hangs at "Verifying restore". My post is short, but I'm not sure what I can tell you. I can't get the iPod to even show the "Plug into iTunes" screen. Any suggestions? I can give more info if you ask.