Machine Jamming - parport0: FIFO is stuck
Our main reception machine at work is running Debian unstable (and has been for a couple of years). Recently it has started jammin up eveyr now and then (a couple of times a week, sometimes more). When it does we have no choice but to turn the power off without shutting down. The times and circumstances of the jams don't seem to follow a pattern. I have checked the logs and the only thing that jumps out at me is this message that constantly repeats:
parport0: FIFO is stuck
parport0: BUSY timeout (1) in compat_write_block_pio
DMA write timed out
I have asked the advice of a friend who said it is probably harmless but if I wanted I could get rid of the message I should remove the parport and parport_pc modules. However when I try to do that I am told that they are in use so cannot be removed. I have also removed them from the /etc/modules file to try to stop them being loaded on startup but they are still there.
A couple of forum posts I've looked at mentioned recompiling kernels. I have failed at every attempt to do that so far and was wondering if anyone had any other ideas.