Okay I accept that this conforms to the GNOME HIG. A better suggestion for the "Quit" button may be "Abort Installation" or "Abort" as the dialogue is explicitly asking if the user wishes to abort, or maybe rephrase the question to something like "Do you really want to quit the installation now?".
-- Cancel installation asks Yes/No question but gives Cancel/Quit options https://launchpad.net/bugs/94935 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
