Ubuntu: Thunderbird 3.1 PPA

Below is a link to an article about the availability of thunderbird 3.1 PPA for Ubuntu. It was useful to me so I thought it would be good to post.

http://www.webupd8.org/2010/07/thunderbird-31-ubuntu-ppa-repository.html

sudo add-apt-repository ppa:ricotz/ppa && sudo apt-get update
sudo apt-get install thunderbird

UPDATE: I no longer recommend this ppa. I recommend the mozilla team, stable, ppas
Firefox: https://launchpad.net/~mozillateam/+archive/firefox-stable
Thunderbird: https://launchpad.net/~mozillateam/+archive/thunderbird-stable

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