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I am using Ubuntu 11.10. Sometimes the window controls don't work. If I click on any of the icons on top-right or top-left they just become colorless and fade away, as though that are not present.

The window has not frozen, as I can click inside the window and continue to work with it. The moment I click inside the window the titlebar controls regain their color, but when I click them again, they fade and bcm colorless.

As a result, I cannot close, minimize or maximize.

This is not a continuous problem, but happens very frequently.

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This question should instead be filed as a bug report, and as such is off-topic, thanks! Instructions on filing a bug report are here. –  coversnail Apr 30 '12 at 11:14
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closed as off topic by jrg Apr 30 '12 at 13:01

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