Removing and reinstalling firefox ***seems*** to have fixed the problem, so if you are experiencing this problem that is something you could try. Please post if you can also confirm this fixes it.
sudo apt-get remove firefox sudo apt-get install firefox -- Crash after firefox is opening a new window (when it should open the new URL in the same window/tab) https://launchpad.net/bugs/19552 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
