Google Calling my Firefox a Spyware?

WTF? This is from my Firefox 1.0.2 on FC3.

UPDATE: Hmm. I read this post and it seems that others have found this problem too couple of months back. This got to do with some anti-virus search filter used in Google to prevent the Santy worm. But I wonder what is triggering this web page for me. I am not searching for anything remotely connected to php or phpbb.