The same problem here on Lubuntu 16.04.1 amd64, starting in safe mode does not cure it.
lsb_release -rd Description: Ubuntu 16.04.1 LTS Release: 16.04
apt-cache policy firefox firefox: Telepítve: 51.0.1+build2-0ubuntu0.16.04.1 Jelölt: 51.0.1+build2-0ubuntu0.16.04.1 Verziótáblázat: *** 51.0.1+build2-0ubuntu0.16.04.1 500 500 http://archive.ubuntu.com/ubuntu xenial-security/main amd64 Packages 100 /var/lib/dpkg/status 50.1.0+build2-0ubuntu0.16.04.1 500 500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages 45.0.2+build1-0ubuntu1 500 500 http://archive.ubuntu.com/ubuntu xenial/main amd64 Packages
I cannot attach the output of the 'ubuntu-bug firefox' file.
The same problem here on Lubuntu 16.04.1 amd64, starting in safe mode does not cure it.
lsb_release -rd
Description: Ubuntu 16.04.1 LTS
Release: 16.04
apt-cache policy firefox build2- 0ubuntu0. 16.04.1 build2- 0ubuntu0. 16.04.1 build2- 0ubuntu0. 16.04.1 500 archive. ubuntu. com/ubuntu xenial- security/ main amd64 Packages dpkg/status 1.0+build2- 0ubuntu0. 16.04.1 500 archive. ubuntu. com/ubuntu xenial-updates/main amd64 Packages 0.2+build1- 0ubuntu1 500 archive. ubuntu. com/ubuntu xenial/main amd64 Packages
firefox:
Telepítve: 51.0.1+
Jelölt: 51.0.1+
Verziótáblázat:
*** 51.0.1+
500 http://
100 /var/lib/
50.
500 http://
45.
500 http://
I cannot attach the output of the 'ubuntu-bug firefox' file.