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A week ago I noticed a weird Lion symptom, and posted a vague description of one this problem.

Today, after some tests, I came to a conclusion that this bug reproduces whenever a the computer is logged into while plugged to a certain display, and then being plugged to a different display.

The only thing I can think of is that the display data is saved, and a conflict occurs upon the plugging of a different display.

Any idea as to how I can delete or reset this data?

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I have the same problem. – sivabudh Nov 20 '11 at 14:38
I've found that logging out from the current user and logging back in again resets the Application Switcher. So far, sad to say, this is the only "solution" to the problem. – konzepz Dec 8 '11 at 18:52

I am unable to reproduce the problem.

Maybe this will work: System Preferences > Displays > Detect Displays

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I did. I'm experiencing this problem with an Apple Cinema Display and some old LG display. Probably type specific. – konzepz Nov 2 '11 at 16:43
hmmm, I have a few questions. What mac are you using (pro, macbook, imac)? How are you connecting the displays (DVI, VGA, HDMI [any adaptors])? Is it still just the application switcher that has the graphical issues, or are there other problems as well? – AdamP Nov 2 '11 at 21:13

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