I'm also attaching my Xorg.0.log. Can confirm that switching off visual effects remedies the problem.
** Attachment added: "Xorg.0.log" http://launchpadlibrarian.net/44129894/Xorg.0.log ** Changed in: thunderbird (Ubuntu) Status: New => Confirmed -- Contents of dialog boxes and menus is blank with visual effects enabled https://bugs.launchpad.net/bugs/555382 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs