This used to affect me, but no longer seems to be an issue as of Ubuntu 14.04. Marked as 'fix released'.
** Changed in: thunderbird (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to thunderbird in Ubuntu. https://bugs.launchpad.net/bugs/589842 Title: In Thunderbird add on manager clicking on a link does nothing Status in “thunderbird” package in Ubuntu: Fix Released Bug description: Binary package hint: thunderbird In the add ons manager of Thunderbird, click on the Browse All, or Learn More links does nothing. I expect it would open the page in a web browser. Ubuntu 10.04 Thunderbrid: 3.0.4+nobinonly-0ubuntu4 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/589842/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp