I have also had subtitle problems on For Your Eyes Only and Casino Royale. The problem was the same as Madagascar 3, Spanish subtitles appearing to translate English Text on the screen. Since the subtitles are not for dialog they are not constant, but they are very annoying when they do pop up.
I have notified Apple each time. They politely apologize and refund my money but the reply is a generic response. As of yet I have been unable to communicate directly with a Supervisor.