yosh!!, just three months after firefox 4.0 released, Firefox 5.0 is set to hit. Today (21 June 2001) Mozilla will launch Firefox 5.0 for final, Mozilla has already released it to FTP. Have you tried it guy's, before you taste it, here some feature that's available on Firefox 5.0 
  • A built in PDF reader
  • Improved HTML 5 and CSS3 support
  • Improved overall performance
  • Firefox 5.0 Web apps, Firefox allow the use of specialized web applications, made for expanding the functionality of a website by adding new options and amenities.
  • A Do-Not-Track option (disabling the ability for advertisers to track browsing habits and install cookies on the computer)
Firefox 5.0 About page

So Firefox 5.0 is ready to taste it now, there is still not available *.deb installer in Official Mozilla FTP, but don't worry it's will available soon, check the link bellow to download firefox 5.0 (tar.bz2) :
  • Firefox 5.0 for Ubuntu i686 (32 Bit) download here
  • Firefox 5.0 for Ubuntu x86-64 (64 Bit) download here
  • For other Operating System and Architecture, check here

Install Firefox 5.0 via PPA  
Firefox 5 is also available in the Mozilla Security PPA (for Ubuntu 11.04), for ubuntu user it's better to perform this step, if you have install firefox 4.0 you can simply upgrade to Firefox 5.0. do following command to install firefox 5.0 via PPA.
sudo add-apt-repository ppa:ubuntu-mozilla-security/ppa
sudo apt-get update
sudo apt-get dist-upgrade


, ,