Firefox Spyware?
 

It seems that Microsoft's new AntiSpyware (beta) is now advising users to remove Firefox on their computers.. A Zeropaid.com thread shows the offending screenshot in action. Once your scanning has been done, if Firefox is found on your computer it provides the user with a "high" threat level and advising removal due to of lack of security updates.

The scan ran last night and I have 1.01 and it didn't pick it up.