The browser has gained multi-processor support finally , enhanced protection against harmful downloads, and media improvements on Android.

Support for old OS X versions and Android Gingerbread has been dropped.Firefox 48 for the desktop is available for download now on, and all existing users should be able to upgrade to it automatically.

As always, the Android version is trickling out slowly on Google Play.Mozilla doesn t break out the exact numbers for Firefox, though the company does say half a billion people around the world use the browser.

In other words, it s a major platform that web developers target — even in a world increasingly dominated by mobile apps.The biggest highlight by far is the rollout of multi-process support.

To check if you re in the Electrolysis group, type about:support into the URL bar and check to see if it says 1/1 Enabled by default under the Multiprocess Windows line item.Just like other browser vendors have concluded, Mozilla believes using a separate rendering process lays the foundation for significant performance and security improvements in Firefox.

By separating web content and Firefox UI processes, when a webpage is consuming a large part of your computer s processor and memory, your tabs, buttons, and menus hopefully won t lock up.Multi-processor support breaks some add-ons, especially those that modify content.

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