Mozilla have released version 8 of its hugely popular Firefox browser fixing many of the existing bugs and adding a new Twitter search bar to the default program.

The headline new feature added to Firefox 8 regards thir-party add-on software, which is now set to disabled as default.

“These add-ons installed by third parties present a number of problems: they can slow down Firefox start-up and page loading time, they clutter the interface with toolbars that often go unused, they lag behind on compatibility and security updates, and most importantly, they take the user out of control of their add-ons," explains Mozilla programmer Justin "Fligtar" Scott.