Hello For some reason my iMac 24" imac6,1 gets stuck during restart or start up when my ipod is connected. If the ipod is connected and enable disk use is checked the computer freezes on the white startup screen and will not go any further. If I unplug the ipod then it will continue the restart and start up like normal. If the ipod is connected and enable disk use is unchecked then the computer restarts normally. Why does this happen? I would prefer being able to keep disk use enabled. What do I need to do to prevent the hang up? Thanks.