franco@franco-stazione01:~$ dpkg -l | grep thunderbird
ii  thunderbird                            12.0.1+build1-0ubuntu0.12.04.1             Email, RSS and newsgroup client with integrated spam filter
ii  thunderbird-globalmenu                 12.0.1+build1-0ubuntu0.12.04.1             Unity appmenu integration for Thunderbird
ii  thunderbird-gnome-support              12.0.1+build1-0ubuntu0.12.04.1             Email, RSS and newsgroup client - GNOME support
ii  thunderbird-locale-it                  1:12.0.1+build1-0ubuntu0.12.04.1           Italian language pack for Thunderbird
franco@franco-stazione01:~$