Maybe you need to provide a little more informations, which ubuntu release? Which sources.list do you have? Did you run apt-get update?
And of course opening a new bug with ubuntu-bug firefox would help a lot, since it will provide so many useful informations. Feel free to link the new bug here or privately to me -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1161422 Title: Update to 20.0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1161422/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs