It looks like you have the proprietary nVidia driver installed, and this is causing the problem. Do you have any idea why the nVidia driver would be installed?
=== Maverick ===
[ 36.539] (II) LoadModule: "glx"
[ 36.539] (II) Loading /usr/lib/xorg/extra-modules/libglx.so
[ 37.334] (II) Module glx: vendor="NVIDIA Corporation"
[ 37.334] compiled for 4.0.2, module version = 1.0.0
[ 37.334] Module class: X.Org Server Extension
[ 37.334] (II) NVIDIA GLX Module 195.36.24 Thu Apr 22 19:52:00 PDT 2010
[ 37.350] (II) Loading extension GLX
=== Lucid ===
(II) LoadModule: "glx"
(II) Loading /usr/lib/xorg/modules/extensions/libglx.so
(II) Module glx: vendor="X.Org Foundation"
compiled for 1.7.5, module version = 1.0.0
ABI class: X.Org Server Extension, version 2.0
(==) AIGLX enabled
(II) Loading extension GLX
If you apt-get remove nvidia-current, does the correct libglx.so from /usr/lib/xorg/modules/extensions/libglx.so load?
It looks like you have the proprietary nVidia driver installed, and this is causing the problem. Do you have any idea why the nVidia driver would be installed?
=== Maverick === xorg/extra- modules/ libglx. so
[ 36.539] (II) LoadModule: "glx"
[ 36.539] (II) Loading /usr/lib/
[ 37.334] (II) Module glx: vendor="NVIDIA Corporation"
[ 37.334] compiled for 4.0.2, module version = 1.0.0
[ 37.334] Module class: X.Org Server Extension
[ 37.334] (II) NVIDIA GLX Module 195.36.24 Thu Apr 22 19:52:00 PDT 2010
[ 37.350] (II) Loading extension GLX
=== Lucid === xorg/modules/ extensions/ libglx. so
(II) LoadModule: "glx"
(II) Loading /usr/lib/
(II) Module glx: vendor="X.Org Foundation"
compiled for 1.7.5, module version = 1.0.0
ABI class: X.Org Server Extension, version 2.0
(==) AIGLX enabled
(II) Loading extension GLX
If you apt-get remove nvidia-current, does the correct libglx.so from /usr/lib/ xorg/modules/ extensions/ libglx. so load?