I was wondering if this is a normal problem - it doesn't seem normal and I haven't found any info on it. I have a 3g 10 GB Windows iPod (reformatted for Mac OS) here that for some reason only wants to use USB on my Mac(s) and not FireWire. My friend has connected it via FireWire on his PC and it seems to work, but when connected using the exact same dock -> FireWire cable on either one of my G4/400's it charges but stays at the "ok to disconnect" screen and never sees the Mac. Nor will Apple System Profiler see the iPod. I have one of those dock -> FireWire/USB 2.0 cables and again, it charges via FireWire but only connects via USB (1.1 in this case, I don't have a 2.0 card.) I've been using it connected to both at the same time to get power from FireWire and sloooowly sync to my Mac. Yes, I am well aware that Apple says not to do that, but since it isn't trying to mount on both interfaces it seems to have no problem with it. All diagnostics pass.