let me add my observations, will hopefully help to narrow down the case.
I've seen the mouse madness as well, on several Dual PPro/200 machines
(but no X crash so far).
This started after I upgraded
from Redhat-4.2, kernels 2.0.3x-SMP
to Debian-2.1 (with XFree86-3.3.2.3a-11)
kernels 2.2.{4,9}-SMP (compiled with gcc-2.7.2.3!)
Started using NFS (via user nfsd and autofs) at the same time.
No changes in hardware at this point.
I'm always using the XF86_S3 driver.
All my kernels are SMP, so no information on UP.
Greetings,
Burkhard Bunk.
----------------------------------------------------------------------
bunk@physik.hu-berlin.de Physics Institute, Humboldt University
fax: ++49-30 2093 7628 Invalidenstr. 110
phone: ++49-30 2093 7646 10115 Berlin, Germany
----------------------------------------------------------------------
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