I do have the same problem, the workaround is to install thunderbird directly form ubunzilla
-- Thunderbird 3.0.4 windowing issues (Lucid Lynx) https://bugs.launchpad.net/bugs/564011 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
