Dude, my 15GB iPod does the SAME EXACT THING, except I have a Ti 667 DVI. You just did me a favor, and proved to me it's either the cable, dock, or iPod itself. Apple insisted I take it to a dealer to determine if it's the cable, but I didn't have a dealer willing to help around here. I'm calling Apple tomorrow and insisting they take the thing and either fix it or replace it. Cripes...