Please follow the link geoffrey has posted. It contains the download location of the 64bit Lightning extension.
-- [MASTER] Please update lightning extension to version 1.0 for use with Thunderbird 3 https://bugs.launchpad.net/bugs/532232 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
