Maybe you are hitting the same problem as me: https://bugzilla.mozilla.org/show_bug.cgi?id=981066 which is related to the environment variable XDG_CONFIG_DIRS
** Bug watch added: Mozilla Bugzilla #981066 https://bugzilla.mozilla.org/show_bug.cgi?id=981066 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1278062 Title: firefox crashes on startup (but apparently layunched properly to enable me to post this) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1278062/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs