The article appears to have been posted 4/5/07. A little outdated, but a good idea. A Firefox pack of extensions in available in the repositories on Ubuntu too. Unfortunately, I don’t use many of them, so I just manually add when I do a fresh install (my personal choice when upgrading the distro).
OK, I learned this one a long time ago. Only have my IE7 on my computer for download purposes all other browsers my PocketFlock and my personal Gran Paradiso FF 3.0 I launch from an USB stick, also my xB-Browser with Tor and Privoxy. And when something goes wrong there, I have a second USB stick with good working versions to be copied in a tick of time.
But just for the others to see what this puppy I mentioned does, go here: http://www.mrtech.com/extensions/local_install/index.html