We've just landed a great new feature in Firefox, that significantly improves the speed of the Back and Forward buttons. You can read all about the feature, and how to enable it in your nightly build at mozillazine.
We're coming into the home stretch on the first alpha of 1.1 so now is the time for all you testers out there to get the latest trunk builds and report your feedback. We can't fix it if we don't know about it and we won't know about it unless you tell us.
