I am thankful this thread was here. I lost a drive and had the other to crash, so I had to reinstall everything. Because all my extensions was listed here, I was able to reconstruct FF like it was. Plus, since I had posted the screenshot, I was able to customize it like it was before. w00t!
I dropped Firebug, as I very seldom used it. I found a new one, though, that is pretty neat: Flagfox. It puts a flag of the country of the website you are visiting in the bottom right corner. I have found it useful to see just where some stuff is coming from. Here's a link to it:
https://addons.mozilla.org/en-US/firefox/addon/5791