Shoutbox

I downloaded the new Antispyware from Microsoft after a nasty virus hit me (came back after a re-imaging -- all gone now).  Anyways, I went to download Plus again, and as it was downloading, the Microsoft Antispyware said that Plus was a threat.  Point being -- why is it concidered spyware when it is stated that there is none? 

Another question is why are there so many registry keys associated with this?

Thank you.