Installing Firefox 4 in Ubuntu 10.04 & 10.10
There were many solutions to install Mozilla Firefox 4 in Ubuntu 10.10. This solution helped me. It works like a charm. :)
1. Add the Firefox stable PPA.
sudo add-apt-repository ppa:mozillateam/firefox-stable
2. Now update the software list
sudo apt-get update
3. Finally install Firefox 4 with the command.
sudo apt-get install firefox
After installation, you will find Firefox under Applications > Internet > Firefox Web Browser.