Yeah i am having the same issue i have 80gb ipod classic, latest ipod software and Itunes, Winamp and even some random windows media player addon so you can sync with media player and none of them work. i am using windows 7 ultimate 64x RC1 build 7100. Every time i get to about 30 or so songs the ipod says " ok to disconnect" and whatever software i am using it locks up. i can manage to put a few songs in one at a time but after a few that too causes the ipod to eject itself. i have tried unchecking the box to limit power usage in device manager for the usb root hubs....no luck..... i even tried SEVERAL older versions of itunes and even ran in EVERY compatibility mode with no luck what so ever. i am two seconds away from throwing my ipod at the wall. If anyone can help it would be greatly appreciated. i have been searching the web for weeks now.