Essential FF addon Rated 5 out of 5 stars
It puts scrolling on par with opera's built in feature and Chrome's SmoothScroll extension. The built in firefox smooth scroll is not fast enough nor is it sensitive to a mouse wheel 'flick'.
Settings for a fast, smooth scroll. Preset scroll is too slow (compared to a normal scroll).
Step size - 130
Smoothness (forepart) - 6
Smoothness - 12
Acceleration - 60