I have 2 small usb harddrives. They both have worked fine with my Powerbook g4 and my g5 tower until last night. One of the drives now only works on the G5 tower and will not Mount on the powerbook. the g5 tower is running 10.4.7 and the powerbook is 10.3.9 if that makes a difference at all. It is weird, they both still work on the g5 and I even tried re formatting the problematic one and it still will not mount on the powerbook. It does recieve power and the light goes on, but it will not mount. I have tried the other USB port on the powerbook and it same problem, no mount. The other drive still works on the powerbook just fine so I dont know whats going on here. any ideas ?