Your FAQ was the first place I looked before posting. I didn't find any reference to "lost interupt" but I did check out the "no hard disk found, contact support" info. It appears that the cable and drives are fine since I did a complete swap of those to my backup player. That alone eliminates most of the probable causes. And since this was only on DC, car wiring or power issues are not at cause.

It's just weird how I've been sitting here syncing to the thing all day and suddenly it takes a crap.

I'll see if I can get a magnifying glass.