I've managed to track this down to the fact that thunderbird spawns firebird with /usr/lib/mozilla-thunderbird at the front of LD_LIBRARY_PATH. As a result the copy of libnss in there gets preference to firefox's and is presumably what causes the problem. Forcefully inserting /usr/lib to the front of LD_LIBRARY_PATH in the /usr/bin/firefox wrapper would be enough to work around this problem.
-- Opening firefox by clicking on links in thunderbird breaks https https://launchpad.net/bugs/57923 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
