Thanks, Rick. Both startup.rb and smustard-app-observer.rb are in my SU6 Plugins folder. I'll reinstall again. Obviously, I never had it with SU5. Sorry you had to research my silly non-problem; I'm slightly embarrassed.
No problem, really - I just wanted to make sure I hadn't written something I forgot about (it has happened!) π
A sightly better educated guess might be that they used some sort of face recognition software to find the actors face and replace it with obama/mcain.