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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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closed as off topic by jrg Apr 30 '12 at 13:01

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here. If this question can be reworded to fit the rules in the help center, please edit the question.

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