I have a 3G 10GB iPod, with firewire disk enabled on my computer (imac15"800mhz). I have recently attempted to update the songs on my iPod, but the computer doesn't acknowledge the connection with anything. iSync does not start up, the firewire disk icon doesn't show, and system profiler displays no firewire devices attached. However, the iPod still charges when connected to the computer. Do you think that the cable might be damaged?