As a user, I forked Libero 0.9.7 release to work with Thunderbird 5.0/ Webmail 1.4.1 (Gecko2 compliance).
I didn't find any sensible way to publish this info on mozdev.org, where the original projects are hosted. Libero 0.9.8 is available on https://sites.google.com/site/mf00195/ Download and rename libero-0-9-8.xpi.kit back to libero-0-9-8.xpi BEFORE INSTALLING, you are strongly encouraged verify the .XPI contents so that you don't end up installing crapware on your system. Regards,
