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Q: OS X version 10.8.5 Remove and mute black tube at bottom of screen

I inadvertently upgraded to OS X, 10.8.5.   Now I have a black tube at the bottom of my screen which I don't know how to mute or to get rid of.  I don't even understand why it keeps telling me where I am.

iMac, Mac OS X (10.6.8)

Posted on Jan 16, 2016 12:01 PM

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Q: OS X version 10.8.5 Remove and mute black tube at bottom of screen

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