I am trying to update my version of Firefox to 9.0 from 8.0.1. The tool that pops up in Firefox at first never actually connects, so I have to do it manually. Trouble is, I am running 8 but also have the Ubuntu release for Ubuntu 10.04 (I think it's Firefox 3.5 or something) that I do not use. What I need to know is: when I download Firefox 9.0, where should I download it and how do I make sure that it replaces the current version? I've downloaded it, and unpacked the archive in the .mozilla directory in my Home directory, but a restart of the system still has 8.0.1 running. Any ideas?