This one was fast! All Ubuntu 11.04 (Natty Narwhal) users can now update their favorite web browser to the latest version, Firefox 5, officially released yesterday (June 21st). The new and improved Mozilla Firefox 5 web browser has been made available for download a few days ago on Mozilla's trusted FTP sites, but the official release was yesterday morning, on June 21st, 2011. A day after that, on June 22nd, Canonical unleashes the highly expected update to the Mozilla Firefox web browser, replacing Firefox 4.0.1 with Firefox 5.0. It is available only for the Ubuntu 11.04 operating system! Therefore, all Ubuntu 11.04 (Natty Narwhal) users can easily update their systems today to the new Firefox 5 web browser by running the Update Manager utility. Among the features brought by Mozilla Firefox 5 we can mention the Location-Aware Browsing, support for CSS animations, increased discoverability by using the Do-Not-Track header preference, improved canvas, JavaScript and memory usage. Firefox 5 also provides better networking performance, better spell checking, better desktop environment integration, better standards support for HTML5, MathML, SMIL, canvas, and XHR, and improved performance for background tabs. These are just a few of the nice features that Mozilla Firefox 5.0 brings on your desktop. If you want to learn more about the new features or major changes from previous versions, please visit the official Firefox 5 website. What are you waiting for? Hit the Windows key, type Update Manager and click its shortcut. Let it load the latest updates and click the "Install Updates" button to update your machine to Firefox 5.