My FF browser was ok this morning but later when I came back to it no pages would load. I rebooted my router - the same so tried Edge and that was ok. So put FF in Safe mode and pages started working. It then gave me the option to refresh FF which I did and after it had done its bit it asked me if I wanted to restore my tabs. I have a lot of tabs open normally but this worked fine and the refresh cured the problem. All very smooth, didn't need to restore a backup. I see from my other machines with FF on them they updated to a new version so either a bad update or bad extension update. Anyone else?