Also happens with Ubuntu running Unity when not using light-themes. In addition there'll be black background flash when switching between directories in Nautilus. dconf-editor org.gnome.nautilus click on preferences changes subframe to black background.
** Tags added: lubuntu precise ubuntu unity -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/930719 Title: black background in lubuntu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-disk-utility/+bug/930719/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs