Here's a workaround someone pointed out - I think this is also the root cause. I've tested it and it works for me:
<http://ubuntuforums.org/showthread.php?t=1587032> -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/658723 Title: VNCServer/Gnome - letter d minimizes window -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs