Just noticed this. The latest Firefox 3 Beta ( at present Beta 3 RC ) is now available in the Ubuntu Gutsy Repositories. The Ubuntu guys had not updated the Firefox 3 Alpha in the repositories for a long time, but now it is done.
To install the latest Firefox 3 Beta in Ubuntu Gutsy
- Go to System —> Administration —> Software Sources
- Then go to Updates tab, and tick “Unsupported Updates” checkbox.
- Click Close. Ubuntu will ask you to reload the software list. Click Reload.
- Then open a Terminal window and type apt-get install firefox-3.0
After installing, goto Applications —> Internet —> Firefox 3 Web Browser.
The Firefox 3 Beta will not replace your existing stable install of Firefox 2. So don’t worry. 
All your Firefox 2 settings and add-ons will remain intact. 
8 comments
Akhil Bansal says:
Feb 12, 2008
Hi,
I just installed it and it is working fine.
Thanks for the TIP
Manas says:
Feb 12, 2008
@ Akhil – Glad to have helped you…
EoRaptor013 says:
Feb 29, 2008
As of today (2008-02-28) the Ubuntu repository still holds Firefox 3.0-beta3pre, not the final beta 3 release.
Manas says:
Mar 2, 2008
You are right. Sad that the Ubuntu developers are not updating the repository.
Andrew says:
Mar 2, 2008
Mozilla Firefox will work in WinXP?
Or only in Ubuntu?
Manas says:
Mar 2, 2008
Mozilla Firefox works on all platforms Windows, Linux and OS X.
Jebus says:
Apr 25, 2008
“Mozilla Firefox will work in WinXP”
Are you stupid, or blind? Cuz those are the only 2 answers to your questions.
Mikko Ohtamaa says:
Jun 18, 2008
Looks like backports still contains beta4. Can’t wait for the release version!