Pardon! I've just read the debian/changelog file in beagle_0.2.16.3-0ubuntu2 sources: it says that thunderbird backend is disabled, as considered buggy, since version 0.2.15.1-1ubuntu1.
Excuse me again for having signaled an inexistent bug... -- Thunderbird backend disappeared in Feisty https://launchpad.net/bugs/94395 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
