I'm still using Win XP, as it's well tried and stable. Glad I never went to Vista!
However we have to move on I suppose, and windows 7 seems to be the next step, but I'll wait until sp1 at least before changing so they can get the bugs sorted out.
The announcement is certainly there -
http://forums.x10hosting.com/server-alerts/96107-lotus-hates-life.html#post529957
Can't believe the bad luck they're having.