Puntuado con 2 de 5 estrellas

Wonderful idea, wished it had worked in my Firefox 3.6.8. Had no effect at all.

Esta valoración es de una versión anterior del complemento (0.2). 

Are you sure?

I have definitely tested it with Firefox 3.6.8 (and the Firefox 4 betas) and it works on all. Try refreshing the tab (making sure you have unreads) and tell me if your favicon is updated.