I don't know how well you keep on your slashdot reading, but if you're a little behind, this may be the most important thing in the nerd news for you.
http://it.slashdot.org/it/05/04/06/1657216.shtml?tid=201&tid=172&tid=218 You can't hide from SP2.
Looks like you'll just have to turn off automatic updates again. For shame.