I've had the same error on our Anapurna Mv since early January 2009, when our machine was a month old. I had our service tech out here a few times over it that first year, but I think he was about as clueless as I was on this one. Don't get me wrong, he knew a lot of the other things with no problem, but this was not a repeatable error. It happened with the simplest of files, and the most complex files, it was no predicting it.
The computer that drives the printer does nothing else, Windows XP, running Onyx 6, plenty or RAM, plenty of drive space. Have run defrag to no avail. It is a dedicated etehernet cable direct to the printer on a separate network card.
Now, this does not happen super often, maybe once a month now. When I see it occurring, I generally watch for a moment or two, see if it is going to pick back up. If not, I hit the escape key, but do not cancel printing, and sometimes it picks back up and goes on. On occasion, when I don't get over there in time, it will send the head, at rapid speed, to the end with the parking station, and bang it into the bumper. That has only happened 3-4 times over the years. I usually catch it before it does that. When that happens, it give me a communications error, there is nothing to do but restart the machine.
I'd love to find a solution rather than a work around on this one.
Best
Ken Miller