Cleared the cache and removed a roque Add-On (MoreFunctionsForAddressBook). Problem seems to be rectified. Sorry for bothering.
(sometimes submitting an issue helps me get my thoughts straight ;-)) ** Changed in: thunderbird (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1649996 Title: lightning stops thunderbird To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thunderbird/+bug/1649996/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs