By the way, have any of those instances where another program detects
memory problems, but memtest86+ doesn't, been on machines where each
CPU has its own memory which is not directly available to the other
cpu(s)?  

It is well known that memtest86+, at least the current version,
only runs on one CPU, and that it cannot test memory local to other
CPUs.  See for instance:

  http://forum.x86-secret.com/showthread.php?t=7722

If this is the case it isn't necessarily true that these other programs
are somehow "harder on memory" than memtest86+, just that they see
all of the memory in the system, and memtest86+ doesn't.

Regards,
  
David Mathog
[EMAIL PROTECTED]
Manager, Sequence Analysis Facility, Biology Division, Caltech
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