So this might be unrelated.
Kees
I've lost my ability to use my Face Book page. Clicking a link does nothing. I've compared it to my laptop (FF 14.0.1) and I see the laptop has Java running in Add-ons, but the desktop does not. Java is installed but it's not working in Firefox 14.0.1. Weird, one day it was working and the next it's not.
I've uninstalled Java and reinstalled it and it still doesn't show up in the FF Tools, Add-ons, Extensions.
What am I doing wrong?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic