This is the line in my /etc/fstab file for usb file systems. My SuSE system doesn't automount USB devices.
Code:
usbfs /proc/bus/usb usbfs noauto 0 0
Or you could just remove all entries in fstab that have anything to do with the USB device.
The problem that I had with SuSE was that when I shut the system down it would add an fstab entry for any mounted file systems. I just got in the habit of manually unmounting all of the file systems except the root file system before I shut down the system.