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First of all, thanks to everybody for their suggestions. A few moments
ago we replaced the RAM modules with new ones, we tweaked around with
the BIOS settings, we changed kernel settings and all that we could
come up with. It didn't help, unfortunately.

Every time we boot the kernel with the EXTMEM setting set, we get the
following error:

 | panic: ptdi: 1b9023

The same kernel without EXTMEM set boots fine, but the machine is
working very unreliable, because processes receive a signal 11 at
random times, or they simply core dump without further explanation.

Any ideas anyone?

	-peter

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