Download it, the update improves performance up to 15%.

It would help if you provided a link to this update.

http://www.microsoft.com/downloads/details.aspx?FamilyID=68c48dad-bc34-40be-8d85-6bb4f56f5110&displaylang=en

Which of the 3 do i download, the docx, the pdf or the xps?

I've had it installed for over a week (torrents). I don't notice any performance increase. Still a good grab, can't argue with updates, especially service packs.

Poor windows. I could update every day if I wanted to.

just update through automatic update.... easier

i installed it on one of my computers and it made it much faster this is a +2 for microsoft. the only thing microsoft can do is make os. (imo)

 no. XP and 2000 are their only good OSs. Vista sucks, 98 was ok, ME was failure, 3.1 was ok, the others suck.

Hahahaha, no. 
 

I vehemently disagree.

(although, you are entitled to your own opinion)