try upgrading your kernel. IIRC there were some issues with USB and the kernel you are running.
Hth!
Alex
I'm running the 2.6.6-435.2.3 kernel from fedora2. I have got problems with usb (my usb-stick is not recognized at all, etc). The problems came with an upgrade from 2.6.5 to this kernel. The old kernel worked fine, the new kernel doesn't. So Im not sure whether an upgrade will help.
greets Boris