Public bug reported:

I used Hardy Heron, but previous versions exhibit the problem too.
Intel video adapter

Howto reproduce: start any OpenGL application under compiz (ie Desktop Effects 
enabled). With any mouse click, window flickers once.
When you move a window, it leaves unrefreshed area.

I understand OpenGL applications don't work well on intel cards because
those don't support redirected OpenGL rendering (for example redering to
texture etc), but I tried metacity compositor. It is far from perfect,
but at least I don't get the 2 issues mentioned in the bug title. Maybe
these can be fixed for compiz too as metacity shows it's possible?

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New

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OpenGL windows flicker on mouse input and leave garbage when moved (intel video 
cards)
https://bugs.launchpad.net/bugs/200230
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