Was copying files to a vfat filesystem on a usb flash drive from two
shells (following
http://www.pendrivelinux.com/2008/05/21/usb-xubuntu-804-persistent-install-from-linux/,
but doing steps 16 & 18 concurrently) and got a kernel crash; alpha lock
and scroll lock (?) flashing.  Predictably, nothing in syslogs.  Had a
USB-attached hard drive plugged in as well as the flash drive, and after
reboot they enumerate in opposite order (/dev/sdb <-> /dev/sdc), if that
matters, which I expect it doesn't.  Config file attached.