Over the years I have tried a number of tweaks to speed up the Firefox browser, some of them work quite well, but this has to be the best one yet, and it is really easy. All you have to do is open Firefox’s hidden configuration menu, to do that go to the address bar and type about:config and the settings list opens. Scroll down until you come to Network prefetch-next, and if the entry in the Value column reads ‘True’ right-click on it and select Toggle (or double click) and it will change to false. It’s that easy! You should now see a noticeable increase in speed when you open pages.