I recently downloaded itunes 4.5 and ever since i have not been able to get my 15G ipod to update succesfully. My ipod is near it's capacity, and it was performing differently even before loading 4.5 but now I can not update at all. The ipod remains on its "do not disconnect" message and the itunes screen will show a spinning disc indefinitely. The ipod works ok when not connected but I hope someone has a solution to this problem.