Recently Mozilla released the final version of Firefox 5 for Windows and Mac , and it is available for Android . Actually this Mozilla Firefox 5 for Android have all the features that of the PC version including the " do-not-track " feature . Do-not-track features allows us to opt out of browser tracking , that means you can disable the browser tracking if you wish . Apart from it , this new update also contains many stability fixes which makes the browser super fast and specially on the 3G networks .