Mozilla has released Firefox 50.0 for Windows, Mac and Linux, with Firefox for Android 50.0 due imminently. For the second release in a row it’s launched a week late, but this time the reason behind the pause is different. The extra week gave Firefox 50 time to unveil its headline new feature: significant start-up improvements, achieved through an overhaul of the application’s add-on SDK module system. Elsewhere download protection covers a wider range of executable files, plus Firefox 50 introduces a smattering of useful usability improvements. The existing add-on SDK’s module system was described as a "performance disaster" in the… [Continue Reading]