This is an updated version of WinDefender 2008.
See: http://www.f-secure.com/weblog/ http://www.f-secure.com/weblog/archives/00001508.html

These rogue infections are multiplying faster than cockroaches in a Bronx tenement and are becoming so virulent that the only recovery is running FDISK to remove the infected MBR on the hard drive then re-installing the operating system and restoring non-infected backups.

I became infested on this new box shortly after taking delivery. Without hesitation, I formatted and re-installed the O/S.
Why fuss for days not knowing if something has written to your MBR or whatever.
Back-up on a regular basis, good to have a secondary drive, as well.

That's often ages quicker than dealing with the infection and not possibly knowing if it's really been dealt with fully.

Agreed, no fussing - just wave goodbye to your previous install and get-on with the new.

Cheers,