Running in safe mode:
firefox --safe-mode
firefox -safe-mode
I'm not sure which is right but I tried both.
I then realized I had copies of firefox running from before the upgrade. I closed them all, killed any firefox processes with kill -9 and moved my profile back. This worked, it ran a mozilla updater and has been fine. Maybe this is your issue?
I am also experiencing this after running updates this morning. I am unable to browse to www.google.com -- I have not attempted other sites.
What I have tried:
Moving profiles/extensions aside:
mv ~/.mozilla ~/.mozilla-bak
Running in safe mode:
firefox --safe-mode
firefox -safe-mode
I'm not sure which is right but I tried both.
I then realized I had copies of firefox running from before the upgrade. I closed them all, killed any firefox processes with kill -9 and moved my profile back. This worked, it ran a mozilla updater and has been fine. Maybe this is your issue?