i am using compiz, before i tried it with beryl. after an hour or less the screens begins to flicker every 30-60 seks for approx. one millisek. the flickering doesent stop when i start a new wm (like kwin => kwin --replace). the only thing which is helping is to restart X!
i have started to search for the problem with google:
nothing seems to help, this is why i posted here. (havent found a bugreport)
-suse 10.3 (i586)
the problem seems to be driver release, xorg release and distro-release independent.
sorry for bad english.