Windows 10. Have used Firefox for years with no problem. Out of the blue, when Firefox is invoked, it comes up, but the screen dims after a few seconds, an the hourglass appears and Firefox freezes at that point. I have to use Task Manager to close it. I tried uninstall and that failed. Then I manually deleted the Firexfox program files. When I tried to install the program from Firefox, that failed as well with a window that pops and says there was a problem. Then the install window freezes (!) and again I have to resort to Task Manager to stop the program. What to do to get Firefox running again? Thanks. Bob Ochsman ochsman@gmail.com