Firefox 4 (stable) has launched, this superb web browser come with the tagline "Made to Make the web a better Place" propose three major advantages that is Personalize, Go Fast, and Stay Safe. Especially for ubuntu user, you can install Firefox 4 by downloading the installation package here,  or you can install it using apt-get or synaptics package manager. If you have decide to install Firefox 4 via apt-get or synaptics you can following 3 step to install Firefox 4 via apt-get or Synaptic on ubuntu bellow.
  • First, before you start the installation, add the Firefox 4 Ubuntu PPA Repository to your /etc/apt/source.list. If you have dificulty to find that file, just copy and paste the command bellow to your terminal.
sudo add-apt-repository ppa:mozillateam/firefox-stable
  • Second, update your package repository info by this command.
sudo apt-get update
  • For the last, install the Firefox 4 through apt-get using the command line bellow, or using Synaptics Package Manager by search key : "Firefox 4".
sudo apt-get install firefox ubufox
Firefox has always good, I never felt disappointed while using this web browser, to get more information and screenshoot about the new Mozilla Firefox 4 you can visit the official website here.