I'm crazy about FireFx 3.0. It is perfect. With one excepton. Del.icio.us buttons don't work although the opposite is said at help part.
I hate two things (at the moment). When I need to change my habits. And when the promised thing isn't true.
Upd. Mea culpa. It works. But in a different way. Now I have my post button again. What a relief!