Mountain View (CA) - Mozilla has launched the third version of its preview build for Firefox 3, adding numerous enhancements to the next-generation Web browser.

In addition to the requisite slate of security and visual enhancement updates, the new beta includes a more user-friendly add-on installer and download manager. Also, it has full-page zoom functionality and one-click bookmarking.

Other noted features to premiere in the latest Firefox 3 build are focused on the "smart" side of the browser, meaning its ability to recognize and even predict browsing and downloading preferences. For example, a feature called "frecency" compiles the user’s browing history to suggest similar websites and searches. Also, it recognizes various file types before they’re downloaded and can perform customizable actions based on the type.

On the more technical side, the update fixes over 350 memory leaks, reduces the memory footprint, enhances SSL functionality for security, and has tighter integration with all three supported operating systems (Windows, Mac OS X, and Linux).