For last 2(?) weeks since latest Firefox automatic update firefox disappears after every restart. On re-install it does not launch and will only run 'as administrator'. I have disabled all add-ons - no effect. I cannot change profile as profile manager will not launch. AllPrograms/Mozilla firefox/ only shows Safe Mode with Mozilla Firefox as only a small page icon. It runs just fine if launched in adminstrator mode including addons. But as soon as I restart the computer the desktop icon goes tothe std windows type icon and nothing will start it. I am only user of computer and should have all administrator priviliges.