Help with Processr.sys

I apologize for re-posting this question, but my earlier post did not elist
any responses. I'm sure from reading other posts that there are many folks
here who might be able to help.

Thanks

I have been having "freezing" problems with a VPR Matrix laptop (P4 at
1.8Ghz). Randomly, but frequently (~5-10 minutes) the PC will freeze and
only a complete power-off (hold in the power button) will resolve the
problem. During debugging, I realized that the problem never ocurred in
Safe Mode. Subsequently, I boot logged both Safe, and Normal startup. Then
removed all drivers unique to Normal from windows/sys32/drivers and
rebooted. Everything was fine. I then started adding drivers back until
the problem began again. The culprit is processr.sys. If this driver
loads, the problem's back, if not all is fine. I'm running XP with SP1.
The version of the file is 5.1.2600.1106. I have two questions. First, is
this the latest version of processr.sys and if not, how do I get the latest.
Second, if I simply don't load the driver, what is not happening?? Thanks
for any and all insights.