Intermittent Freezes after Bootcamp 2.1 upgrade

Approximately every 10 to 15 minutes, I get a 15-20 second "freeze". That is the best way I can explain it. All computer functions stop completely, even the mouse movement. Placing my ear onto the device, it sounds different while this is happening. Everything appears to work fine before and after the freeze.
This only happened after installing the latest bootcamp update. I also have the problem described in this post:
http://discussions.apple.com/thread.jspa?threadID=1514424&tstart=0
What is the bootcamp taskbar program called and must I have that running all the time?

Firebird74, that thread doesn't apply to my situation exactly. I'm running Win XP under Boot Camp, not Vista, and my intermittent freeze happens consistently whether I am plugged in or on battery power.
Through reading several Apple Boot Camp discussion posts, I determined that I can fix the problem manually by force quitting KbdMgr.exe from task manager after each reboot, but this is rather annoying and I'm not even sure what KbdMgr.exe does, since it doesn't appear to affect anything at all without it running.
I'm using Input Remapper also, which shows up in my Task Bar, however I do not have any Boot Camp icon in the taskbar. I was wondering whether KbdMgr.exe is conflicting with Input Remapper.
I tried the Intel Chipset driver download from another seemingly related post, but it said my hardware wasn't new enough and quit.

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