So why full system backup? In addition - I don't intend to start a war here, I'm just curious - I'd like to know if there is a good reason why SP2 is recommended (by a lot of people) to be installed on a fresh XP install, or better yet, to install a slipstreamed version. If it updates, ie. overwrites, system files, then why wouldn't it work just the same if applied after installing other applications / drivers / updates? To me it sounds rather absurd, just like people who uninstall old graphics card drivers when they buy a new, different brand, card. The new card doesn't use the different brand drivers, so why should they be uninstalled? I know I'm seen as an anti-Microsoft person here, and maybe I'm just too stupid to understand this.