Oh, man. I use Linux for my day job but keep a Windows 7 install should the need arise. An old friend sent me a link to try out a video game he and a buddy made in college. I downloaded the program, Norton deletes it immediately. It didn't recognize the application signature. (Actually, it recognized it but it wasn't popular enough -- about 100 people had apparently downloaded this game that also used Norton.) After dicking around with Norton for about 30 minutes (nearly drowning in a sea of check boxes and vaguely titled program options), and reaching the boundaries of my Google-fu I just gave up and removed Norton.

Problem solved.

I'm glad I'm not a startup or small company trying to ship Windows executables.