After much waiting and anticipation, Firefox 3 is officially launched. If you have installed the previous beta and release candidate version, simply run the Update manager (System->Administration->Update Manager) to upgrade to Firefox 3.
For those who have not installed Firefox 3, you can do it by adding the following package to your repository.
gksu gedit /etc/apt/sources.list
Add the following line:
deb http://ppa.launchpad.net/fta/ubuntu hardy main
Save and exit.
sudo apt-get update
sudo apt-get upgrade
Once finished, you should have Firefox 3 running in your Ubuntu.
(Alternatively, if you are patient enough, you can wait for Ubuntu to update their repository. It may take a while)
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There is no need to add the extra repository.
The Ubuntu team has been working hard to get in Firefox 3 final release in time for the real release at Mozilla.com. They have put it in hardy-proposed and have worked on it hard.
They have tweaked it to make it work with Ubuntu. It will be a better choice to upgrade by hardy-updates, from the official repo, than some third-party place.
By the way, I meant they put it in hardy-proposed to work on it (before the release.)
Yesterday, just a few minutes after the official release of Firefox 3, it was moved to hardy-updates.
@Exsecrabilus: Thanks for informing. My system has not been able to detect it. Good that the Ubuntu team has moved quickly to add to the repo. This is not the case during the beta and rc version.
how do i accesse the repository/add a package to it
You can access the repository via System->Administration->Synaptic Package Manager. There is no need to add a package to install Firefox 3. You just need to run the update manager to get it updated to the latest stable version.
If you want to try out the newest version, Firefox 3.1 beta, here is the instruction