Install Firefox 9 on Ubuntu 11.10 Oneiric/Ubuntu 12.04 Precise Precision/11.04/Linux Mint 12

What’s New in Firefox
The latest version of Firefox has the following changes:
  • Added Type Inference, significantly improving JavaScript performance
  • Added support for querying Do Not Track status via JavaScript
  • Added support for font-stretch
  • Improved support for text-overflow
  • Improved standards support for HTML5, MathML, and CSS
  • Fixed several stability issues
  • Fixed several security issues

To install Firefox 9 on Ubuntu/Linux Mint open Terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:

For Ubuntu Lucid and Maverick, Firefox 9 should be available in the Firefox Stable Channel PPA soon: "ppa:mozillateam/firefox-stable" (in fact, the packages have already been built successfully, but publishing has been disabled for the PPA for now).

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