ok, if you get a email from MS. then hit delete straight away. i mean it!
i know several ppl brought down aready and its a complete format jobby. its deleting the microsoft patches very fast and MS site is currently overloaded. they cant patch fast enough.
watch yourselves on the web. do not go up without your firewalls set to high.
here is a link which has at least one MS support guy up explaining whats going on. its a gaming site and some of the language is a bit crass or has expletives. watch your sensibilities but you do need to see the wrath of this thing k. seems the rpc bomb has gone off. look for port activity and lock down k.
http://www.quake3world.com/ubb/Forum3/HTML/072040.html
DO NOT CLICK ANY LINKS ON THE SITE. JUST READ AND THEN CLOSE THE SITE.
you have been warned guys.