The easiest way to install the latest version of Firefox in your Ubuntu is by launching the following command:
sudo add-apt-repository ppa:mozillateam/firefox-stable && sudo apt-get update && sudo apt-get install firefox
This will update your current version of Firefox to 4.0.
doesn’t work the PPA; in fact make a big ERROR in repository. so , calm down till tomorow guys. it is in vain to make a lots problemes to peoples, bloking PPA maverick and stuff….
just to be the first who put this news !!!
This command is really useful and take just about 5 minutes.But firstly you have to login as super user to launch that command.