@Anonymous above me...

Yea, you beat me to the post.  MS has no responsibility here.  How the F*** would they be able to do compatability testing on viruses, rootkits, etc.?  And why should they have to???  The best MS or anyone can do is do /some/ testing on legal applications... not f'n malware that people are not supposed to have anyways.

People that bash MS for every little thing are f'n morons and should not be allowed to own PCs.