Just an idea. Did you check symbolic links in /usr/lib/xorg/modules/extensions/ By my side i have : lrwxrwxrwx 1 root root 43 2007-06-13 13:23 libglx.so -> /usr/X11R6/lib/modules/extensions/libglx.so lrwxrwxrwx 1 root root 44 2007-06-13 15:46 nvidia_drv.so -> /usr/X11R6/lib/modules/drivers/nvidia_drv.so -- Regards. Jean-Claude