thunderbird 1:45.8.0+build1-0ubuntu0.12.04.1 / usr / lib / thunderbird / plugins

/usr/lib/thunderbird/plugins is in thunderbird 1:45.8.0+build1-0ubuntu0.12.04.1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/thunderbird/../thunderbird-addons/plugins