https://bugs.freedesktop.org/show_bug.cgi?id=54002
--- Comment #10 from Thomas Rohloff v10lator@myway.de 2012-08-24 17:39:49 UTC --- with both, ""pp_jimenezmlaa_color" and "pp_jimenezmlaa" setted to 0 it seems to be fixed completely. But I don't think activated MLAA should cause this.