Quote - I downloaded the update last night (I have XP Home), and since then every time I start up I get a message about "user32.dll" having been moved because it conflicted with something Windows had loaded (presumably the update).  Anyone know what this is, since I haven't found anything that isn't working.

 

My dad got this type of error today, too. If your error mentioned something about RTHDCPL.EXE or HHCTRL.OCX,  there is a hotfix on microsofts website. heres the link
http://support.microsoft.com/kb/935448/en-us

Hope this helps. ^_^ 
Nikitagia