Mozilla, a global, nonprofit organization dedicated to making the Web better, is proud to release Mozilla Firefox 4, the newest version of the popular, free and open source Web browser. Firefox puts users in control of their Web experience, providing a streamlined user interface, fun new features, a boost in speed and support for modern Web technologies.
To install Firefox 4.0 open a Terminal window (Applications -> Accessories -> Terminal) and copy+paste the following lines:
sudo add-apt-repository ppa:mozillateam/firefox-stable
sudo apt-get update
sudo apt-get upgrade
When installed you can find Firefox under Applications -> Internet -> Firefox Web Browser
Read more here
What’s New in Firefox 4:
Fastest Firefox Ever
Performance: Firefox is up to six times faster than the previous release. With improved start-up and page load times, speedy Web app performance and hardware accelerated graphics, Firefox is optimized for rich, interactive websites.
App Tabs: give a permanent home to frequently visited sites like Web mail, Twitter, Pandora, Flickr.
Switch to Tab: easily find and switch to any open tab from your Awesome Bar without opening duplicate tabs.
Panorama: drag and drop tabs into manageable groups to save time while navigating many open tabs.
Private and Secure Synchronization
Firefox Sync: access your Awesome Bar history, bookmarks, open tabs, passwords and form data across multiple computers and mobile devices.
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