Alan Stern wrote: > But if not then this is a genuine bug and it should be reported > separately on the linux-usb mailing list. > > > Stranger and stranger. I started usbmon on the quad core and (at the console) cat /sys/kernel/debug/usbmon/0u worked fine for the keyboard and mouse. I then plugged in the S-2400 and was greeted with this kernel panic (jpg attached). David