My Macbook Pro keeps muting/unmuting itself

If I mute my Mac before shutting down, should it remain muted once I restart the system? Because it keeps un-muting itself.

MacBook Pro (13-inch Mid 2012), OS X Mountain Lion (10.8.2)

Posted on Oct 6, 2013 5:49 PM

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My Macbook Pro keeps muting/unmuting itself

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