For some reason I have lost communication with my firewire devices in my G4 Dual 1GHz. Neither of the two ports will work with my Ipod or my DV cam. I have tried turning the camera off and on, quiting and relaunching both Imovie and FCP, and restarting the computer. One weird thing is that Itunes does not recognize my Ipod, but it does appear to be charging while it is plugged in. Any ideas?