Lightning does NOT come installed in thunderbird nor in Ubuntu by default you have added it at one point and kept profile left over. Please post the output of the following:
apt-cache policy lightning-extension libstdc++6 libstdc++5 thunderbird-2.0 thunderbird-3.0 did you download thunderbird-3.0 from mozilla site. also did you install lightning from mozilla site? ** Changed in: lightning-sunbird (Ubuntu) Assignee: (unassigned) => John Vivirito (gnomefreak) -- thunderbird crashes when a new mail incomes during calendar updating https://bugs.launchpad.net/bugs/438591 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