You do not appear to have it installed via Ubuntu's repositories, do you?
Can you provide the output of "dpkg -l | grep thunderbird" from a terminal,
please?
** Changed in: thunderbird (Ubuntu)
Importance: Undecided => Medium
** Changed in: thunderbird (Ubuntu)
Status: New => Incomplete
--
Thunderbird crashes when using tab key in subject field
https://bugs.launchpad.net/bugs/534756
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs