Just for closure's sake:
This turned out to be a hardware problem.
Memtest86+ http://www.memtest.org/ found an intermittent and
pattern-sensitive memory error,
and only appearing at one or two random locations within the 256M module.
Replacing the dodgy RAM module did the trick.
Dave Spring wrote:
running kernels with or without PREEMPT enabled.
If you don't actually *need* accelerated 3D (or if you could do
without it for a while), switching to the "nv" driver for a few
days/weeks would be interresting. If the crashes go away that would
point towards the nvidia driver, if they don't go away we'll get a
nice untainted crash report.
It's not the nv drivers - or at least not just them.
I'm getting this bug once or twice a day on a mini-ITX (C3 533Mhz
processor) based server which doesn't even have X installed.
For me, it appeared sometime after 2.6.12.
I'm now running with gentoo 2.6.15-r1 with Hugh's recently posted patch,
and waiting 8-|
Dave Spring
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