Jason Pyeron wrote:
This happened a few times now, I (soft) reboot and do the fsck thing and all is fine until it happens again.
A) your USB key is flakey
B) your systems USB ports are flakey
C) the cabling between the mainboard and the USB port is flakey.
I've run into C) quite a lot, where front panel USB ports don't work reliably at USB2.0 speeds when doing large and/or complex operations. I suspect the internal wiring is inadequate for the task.