[ubuntu] Replicable Freeze in Gnome Shell, Unity, Cinnamon

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http://ubuntuforums.org – Since I started out using Linux with Ubuntu (10.04), I have been testing various Gnome-based desktop environments for a new system. The new ones listed above all have the same problem, which is that they tend to freeze when the system is (I guess) overloaded with processes. Specifically, I can make any of them freeze when I hit the screen-brightness button on my machine too many times too fast, or when I mash down on it while another program is actively doing something, such as applying settings or requesting a web-page. The freeze involves a non-responsive screen, and sometimes a non-resp (Hardware)