Well... I finally install de binary (6629) from nvidia site. It's simpler (1 command only) then the ones by apt-get and they work just NICE! No more "GLX" missing on display..." errors, and I've got ~1830 FPS now (with nvidia-glx+linux restricted 6111 it was ~1710 FPS). Everything works fine with xfree86 and with xorg! -- Rui Pais