Were you running McAfee antivirus software? If so, there’s a thread posted on that, very recently here on FR, some sort of malicious code in it that causes an “autoimmune” attack, wiping out core files. Some networks in England and Italy are experiencing 50% BSOD.
Dude, McAfee is a piece of s***, especially the consumer version. Symantec’s not much better. That’s why I use Nod32. :-D