root@fred:/usr# ls lib32/libGL* -rw-r--r-- 1 root root 656 2011-09-29 18:45 lib32/libGL.la lrwxrwxrwx 1 root root 15 2011-09-29 19:57 lib32/libGL.so -> mesa/libGL.so.1 lrwxrwxrwx 1 root root 15 2011-09-29 18:45 lib32/libGL.so.1 -> libGL.so.280.13* -rwxr-xr-x 1 root root 794628 2011-09-29 18:45 lib32/libGL.so.280.13* lrwxrwxrwx 1 root root 11 2011-09-29 19:57 lib32/libGLU.so -> libGLU.so.1 lrwxrwxrwx 1 root root 20 2011-09-29 19:57 lib32/libGLU.so.1 -> libGLU.so.1.3.070701 -rw-r--r-- 1 root root 456380 2010-04-29 06:43 lib32/libGLU.so.1.3.070701 root@fred:/usr# ls lib32/libgl* lrwxrwxrwx 1 root root 17 2011-09-29 19:57 lib32/libglade-2.0.so -> libglade-2.0.so.0 lrwxrwxrwx 1 root root 21 2011-09-29 19:57 lib32/libglade-2.0.so.0 -> libglade-2.0.so.0.0.7 -rw-r--r-- 1 root root 93072 2010-03-06 14:31 lib32/libglade-2.0.so.0.0.7 lrwxrwxrwx 1 root root 12 2011-09-29 19:57 lib32/libglut.so -> libglut.so.3 lrwxrwxrwx 1 root root 16 2011-09-29 19:57 lib32/libglut.so.3 -> libglut.so.3.9.0 -rw-r--r-- 1 root root 216620 2010-01-18 18:31 lib32/libglut.so.3.9.0 So there is no libglx in /usr/lib32, and the libGL that is there seems to belong to mesa and not nVidia.