On Fri, Apr 02, 2004 at 06:31:55PM +0100, David Brownlee wrote:
> 	Further to this. Problem does not occur with async either.
> 	Does anyone have any thoughts? I maybe be able to try on an esp
> 	equipped ultra1 to see if it has similar issues.
> 

I saw plenty of reports that combination of esp and tagged queueing
caused exactly this failure. I don't know what it is, driver lossage,
defective hardrive, as I've never experienced it myself. As an experiment
I'd suggest to try to disable tagged queueing (man esp(4)).
	Andrey