How do I install the latest stable version of Firefox?
The latest version of Firefox is available for as a security updates in all supported releases of Ubuntu, just doing a normal update will pull it in. You need to enable at least one of the security or updates repositories (e. g. via Software & Updates → Updates); security should be enabled by default but it's better to check, especially if the package manager doesn't update Firefox yet.
Usually it's available within a few hours of Mozilla's announcement, sometimes faster, depending on the archive builders, and the speed of your local mirror, etc.
See also:
- Firefox New Version - Community Help Wiki
- How to install the latest stable version of Thunderbird?
A generic way to install Firefox
You can either go to Firefox page and download the latest.
Then you could create a directory where you're going to test this release of Firefox, unpack the downloaded package (I assume it is in your $HOME/Downloads folder) and launch it:
cd $HOME
mkdir Apps
cd Apps
tar jxf ~/Downloads/firefox-4.0b*.tar.bz2
To launch it, it's probably more interesting to create a "Launcher" (Gnome specific), an icon on your desktop to launch the beta. I guess there are similar steps for KDE. For this:
- How can I edit/create new launcher items in Unity by hand?
If you want the Beta you can use this PPA:
sudo add-apt-repository ppa:mozillateam/firefox-next
Source - Firefox Next
If you want the Bleeding Bloody Edge Next 2.0 Experience (Firefox 11.x now) then use this PPA:
sudo add-apt-repository ppa:ubuntu-mozilla-daily/ppa
Sources - Firefox Daily Builds (WARNING - Very unstable and you get several updates a day)