Firefox 3.6 tweaks

Problem?: I was happily using the features of Firefox 3.5 and below, then changing to 3.6 somehow changed some of my favorite features.....

Solution:
Most features that you missed in newer versions are 'revertible', either natively or via some plugins by some like minded geeks.
Here's some sample tips.
http://mozillalinks.org/wp/2010/01/firefox-3-6-tips-and-tweaks