I had a lot of them. Quite a few that did not have any indication of what they were which makes it necessary to jump through some additional hoops. Go to “Help” and click on “Troubleshooting Information” and you can find the ID of the add-ons you have installed. This add-on can be used to clear all those preferences left by extensions after uninstallation, all those garbage which some developers do not care on clearing themselves on their add-ons and which later or sooner will make Firefox to load slower…  eCleaner :: Add-ons for Firefox  ↑Go get it↓

Just Released None Schedule this Coming Week Firefox 3.6.23 – September 27th Firefox 7 Final Release – September 27th Firefox 7 for Mobile Final Release – September 27th Firefox 8 Beta (8.0b1) – September 27th-30th* Firefox 9 Aurora (9.0a2) – September 27th-30th* Future Releases Firefox 3.6.24 – November 8th? Firefox 8 Final Release – November 8th Firefox 8 for Mobile Final Release – November 8th Firefox 9 Beta (9.0b1) – November 8th* Firefox 10 Aurora (10.0a2) – November 8th* * As part of the new Rapid Release Schedule, dates listed for Aurora and Beta builds reflect when the code merge…