voiceover won't turn off
i don't even know how it turned on. but nothing will turn it off. the "enable voiceover" checkbox is unselected. i've tried clicking it and unclicking it, and i even get the "turn off voiceover button." if i press it, nothing happens--except once when it showed a big black message box saying that it was off. the voiceover utility has "mute speech" checked in the voiceover utility.
MacBook Pro 15", OS X 10.10