Mailing the story:
Install Firefox 3.6 Beta1Pre In Ubuntu For A Huge Speed Boost
I was telling you about my issues with scrolling in Firefox (see #6). Well, I didn't manage to fix that for Firefox 3.5 but instead, I installed Firefox 3.6 beta 1 pre (Namoroka) and the scrolling now works perfectly (thanks to Tinhed for the tip!). Also, basically everything feels a lot faster, at least in Ubuntu. This is why I suggest you upgrade to Firefox 3.6.