The boxes do not become checked after rebooting, but the talking alerts continue. They speak after the alert has been displayed for about 30 seconds or so.
In my ~/Library/Preferences folder, the following files have the word speech in them;
com.apple.speech.feedbackservicesserver.plist
com.apple.speech.prefs.plist
com.apple.speech.recognition.AppleSpeechRecognitio n.prefs.plist
com.apple.speech.recognition.feedback.prefs.plist
com.apple.speech.recognitionserver.plist
com.apple.speech.synthesis.general.prefs.plist
com.apple.speech.voice.prefs.plist
Which of these, if any, should be deleted?