postgres@dunquino.com writes:
> This is intermittent and hard to reproduce but crashes consistently in the
> same place. That place is backend/access/common/heaptuple.c line 1104:
> ...
> This system is using streaming replication, and the problem always occurrs
> on the secondary.
Have you read the thread about bug #6200? I'm suspicious that this is
the same or similar problem, with a slightly different visible symptom
because of pickier hardware. I'm afraid we don't know what's going on
yet there either, but the idea that t_hoff is wrong gives us a new line
of thought.
regards, tom lane