Firefox 5 may be better than Firefox 4. I feel Firefox is to slow to run in my netbook. I think it is because Firefox 4 consume big memory than the previous browser, Firefox 3. Then, there is Firefox 5. When I run it for the first time, I feel it little bit snappy than Firefox 4. It is simply faster. It just acknowledge what Mathew Shaer from CSM said.
Firefox 5 is here. Mozilla says the newest version of its browser delivers over "1,000 improvements," including plenty of patches and fixes, and a "Do Not Track" feature to help bolster the privacy of users. Also on-board Firefox 5: The ability to play CSS animations, and the capability to instantly tinker with Firefox add-ons, without slowing down the show or shutting off the browser.