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memtest86+ fails at address '00000000000 - 0.0MB'



I've got a Debian Woody server (three-year-old dual Xeon thing) and as a
result of one or two little quirks (failed CRC sum for some gzipped
files etc.), I decided to run memtest on it.

The memtest produced an error at location '00000000000 - 0.0MB', with
output roughly as follows after running for about 16 hours (I've
transcribed this, so it might not be 100% accurate):

Tst Pass Failing Address    Good     Bad    ErrBits   Count Chan
 8    1  00000000000 0.0MB  uncorrected        0000   ECC    0
 6    2  00000000000 0.0MB  uncorrected        0000   ECC    0
 4   12  00000000000 0.0MB  uncorrected        0000   ECC    0
 6   13  00000000000 0.0MB  uncorrected        0000   ECC    0
 8   14  00000000000 0.0MB  uncorrected        0000   ECC    0

I replaced *all* the RAM in the box and ran memtest86+ again, and after
a few hours I'm getting an error at '00000000000 0.0MB' again, with
results similar to the previous run.

Is this memory address something 'magical', is it really part of the
main system RAM?

Can anyone suggest what might be wrong here?

Thanks for all comments/suggestions...

Dave.

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