"Andrew Hall" <temp02@bluereef.com.au> writes:
> We haven't been able to isolate what causes it but it's unlikely to be
> hardware as it happens on quite a few of our customer's boxes.
Okay, then not hardware; but it seems like you ought to be in a position
to create a test case for other people to poke at. I don't insist on
a 100% reproducible case, but something that will show the problem if
run for awhile would be a great help.
regards, tom lane