I also got it and I run XP.
None of those reg tweeks I found above worked. But then I decieded to double-check some questionable tweeks I found on a form a week or so ago. I found one that sounded especially pertinant at
http://www.tweakhound.com/xp/xptweaks/supertweaks11.htm .
On the tweek LargeSystemCache, it said that that tweek offers little to no value except to servers, and it renders many Windows XP applications and drivers unusable. The key is located at [HKEY
LOCALMACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory Management] . To undo it, simply set the value to 0. It worked for me.
This style of memory management may also be the reason the person running Windows Server is having trouble. Disabling this key might work for that person, too, but it might undermine the reason s/he is running Windows Server in the first place.