Does this problem go away if you disable Unredirect Fullscreen Windows? You can do so from ccsm or by opening gconf-editor and going to /apps/compiz/general/screen0/options and unchecking unredirect_fullscreen_windows.
Does this problem go away if you disable Unredirect Fullscreen Windows? You can do so from ccsm or by opening gconf-editor and going to /apps/compiz/ general/ screen0/ options and unchecking unredirect_ fullscreen_ windows.