I have been using Firefox for a couple of years now, and it has become unstable in its operation, when typing its slowiing the system and all your words are jumbled as it can't keep up. also it keeps coming up with 'not resonding' all the time, I have tried re-installing it, it then seems ok for a couple of days then its starts all over again. I have tried using 'Chrome again' and the problems do not appear at all using this browser, but I do like using Firefox so please fix it.