How to Install stable Firefox 3.6(Not the Namoroka One) in your ubuntu

I you are using ubuntu 9.10 karmic/ 10.04 Lucid.
just run these commands on your terminal:

sudo add-apt-repository ppa:mozillateam/firefox-stable 
sudo apt-get update
sudo apt-get install firefox-3.6

Now for those who are using ubuntu 9.04/8.10/8.04. 
You will need to edit your source list and add the appropriate ppa.
Open sources.list

sudo gedit /etc/apt/sources.list

and add the below lines to it.

PPA for 9.04 (Jaunty): deb http://ppa.launchpad.net/mozillateam/firefox-stable/ubuntu jaunty main

deb-src http://ppa.launchpad.net/mozillateam/firefox-stable/ubuntu jaunty main

PPA for 8.10 (Intrepid): deb http://ppa.launchpad.net/mozillateam/firefox-stable/ubuntu intrepid main

deb-src http://ppa.launchpad.net/mozillateam/firefox-stable/ubuntu intrepid main

PPA for 8.04 (Hardy): deb http://ppa.launchpad.net/mozillateam/firefox-stable/ubuntu hardy main

deb-src http://ppa.launchpad.net/mozillateam/firefox-stable/ubuntu hardy main

save and exit
Now get the updates

sudo apt-get update

and install firefox 3.6

sudo apt-get install firefox-3.6