It's large in size because the network install file contains the updates for Media Center Edition, Media Center Edition 2004 and updates Tablet PC to version 2004. It will only install these vpdates on PCs running XPMCE or XPTPC. Express is going to be the way to go for the average end user.

View: Windows XP Service Pack 1 VS Windows XP Service Pack 2

Download: Download Windows XP SP2 Build 2082 full - 360MB