i have downloaded and installed sp2, nothing noticeable apart from the new startup screen and the pesky security center. still, at least it detects BitDefender fine
also slipstreamed with my xp cd. waiting for next time i make a royal hash of my system
i used the 266mb KB835935 or whatever it is release

none of this downloading it and uninstalling it crap for me, it took 2 straight days to come down

(dial up, u see

)