I upgraded to 12.04, and this issue remains.
$ apt-cache policy firefox | head -3 firefox: Installed: 13.0+build1-0ubuntu0.12.04.1 Candidate: 13.0+build1-0ubuntu0.12.04.1
I upgraded to 12.04, and this issue remains.
$ apt-cache policy firefox | head -3 0ubuntu0. 12.04.1 0ubuntu0. 12.04.1
firefox:
Installed: 13.0+build1-
Candidate: 13.0+build1-