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HT1338: OS X: Updating OS X and Mac App Store apps

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HT1338 Recently, whenever I try to select an open window with my mouse, the windows jump all over the screen.  I am constantly trying to "catch" them.  Does anyone have any idea why that is suddenly happening?   If so, what can I do about it?  Thanks,  Sharon

186 Views 1 Reply Latest reply: Mar 28, 2013 3:16 PM by WZZZ RSS
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Mar 28, 2013 1:26 PM

Recently, whenever I try to select an open window with my mouse, the windows jump all over the screen.  I am constantly trying to "catch" them.  Does anyone have any idea why that is suddenly happening?   If so, what can I do about it?  Thanks,  Sharon

Mac Pro (Early 2009), Mac OS X (10.6.8)

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