Thunderbird bz 579023 still not fixed even though there is an upstream fix available
> Debian builds xulrunner-220.127.116.11 against the system libffi-3.0.9 and it
> just works. They even claim a minimum version of only >= 3.0.5 for the
Actually they even claim only >= 3.0.4.
See for yourself:
devel mailing list