Firefox is a pretty popular browser.
It runs quickly.
It has a lot of plugsin. I use Web Developer and Firebug myself.
However. All software ages. Hah, even this website ages.
Firefox 2 has a number of unfixed (to my knowledge) bug.
Solution: use Firefox 3.
Sometimes it is just time to move on.
Case in point: have you seen this?
Affected package: firefox-18.104.22.168_9,1
Type of problem: mozilla -- multiple vulnerabilities.
1 problem(s) in your installed packages found.
You are advised to update or deinstall the affected package(s) immediately.
How to fix: upgrade. However, it's not that easy. There are a few dependants.
I found the solution in the Internet. ;)