No audio coming out of MacBook Pro Early 2011 with Mountain Lion

I just updated my Early 2011 MacBook Pro to Mountain Lion and I am having no problems except for the fact that I have no audio coming out of my computer.. when I turn it up it says that it's all the way up but theres a circle with a line through it like it's muted or something like that. When I click the mute button on my keyboard the line goes through the little speaker picture like it usually does and the cicle with the line is still there but then when I unmute it and turn it up it's still all the way up with the circle and line. Any ideas?
Here's a screenshot of it:

Same issue with the same model.  I restarted and the problem went away.  Hopefully it will stay away.

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