Ok, my fstab line for the USB device now looks like:
/dev/sda1 /mnt/USBflashdrive auto noauto,owner,rw,user,vfat 0 0
I get the following error:
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
missing codepage or other error
In some cases useful info is found in syslog - try
dmesg | tail or so
I got the same error when I tried with ufs... not sure what's going on... I haven't tried EVERY possible fs type, but maybe someone here knows a quicker way to fix it?