Fire Fox will not start at all, even though it is in my processes, as if its running, I have tried uninstalling it and re installing it...no luck. I also tried to uninstall it and go back to the previous version and that does not work either

A possible cause is security software (firewall) that blocks or restricts Firefox without informing you about that, maybe after detecting changes (update) to the Firefox program. Remove all rules for Firefox from the permissions list in the firewall and let your firewall ask again for permission to get full unrestricted access to internet for Firefox. See Server Not Found - Troubleshoot connection problems and Configure firewalls so that Firefox can access the Internet and http://kb.mozillazine.org/Firewalls

See also http://kb.mozillazine.org/Browser_will_not_start_up