segmentation fault on Fedora 16.

I am trying to run the demo code (the bouncing ball) and I am getting a
segmentation fault (core dumped).  Debugging output and other system
informations are included below and glxinfo
output is attached.  I suspect that it is a graphical driver error.  I use the
NVidia drivers and have included that top of the /var/log/Xorg.O.log files.

However, I am rather stuck.   Anyone seen this before?


; env VPYTHON_DEBUG=1 python ball.py
VPython: ./python/cvisualmodule.cpp:144: Importing cvisual from vpython-core2.
VPython: ./gtk2/display.cpp:64: Opening a window from Python.
VPython: ./gtk2/display.cpp:458: Starting GUI thread.
VPython: ./gtk2/display.cpp:475: Adding new display object at address
0x1141ed0
VPython: ./core/display_kernel.cpp:1566: display_kernel::set_visible -- did
gil_release gil
VPython: ./core/display_kernel.cpp:1568: display_kernel::set_visible --
executed lock
VPython: ./core/display_kernel.cpp:1569: display_kernel::set_visible -- next,
enter while loop
VPython: ./core/display_kernel.cpp:1571: display_kernel::set_visible -
waiting1
VPython: ./core/display_kernel.cpp:323: Querying the list of OpenGL
extensions.
zsh: segmentation fault (core dumped)  env VPYTHON_DEBUG=1 python ball.py
; uname -a
Linux wolf.isotek.co.uk 3.3.7-1.fc16.x86_64 #1 SMP Tue May 22 13:59:39 UTC
2012 x86_64 x86_64 x86_64 GNU/Linux
; python -V 
Python 2.7.3
; yum list python-visual
[...]
Installed Packages
python-visual.x86_64   5.71-2.fc16   @fedora

; cat /var/log/Xorg.0.log
[  1186.235] 
X.Org X Server 1.11.4
Release Date: 2012-01-27
[  1186.235] X Protocol Version 11, Revision 0
[  1186.235] Build Operating System: x86-01 2.6.32-220.4.1.el6.x86_64 
[  1186.235] Current Operating System: Linux wolf.isotek.co.uk
3.3.7-1.fc16.x86_64 #1 SMP Tue May 22 13:59:39 UTC 2012 x86_64
[  1186.235] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.3.7-1.fc16.x86_64
root=/dev/mapper/vg_wolf-fedoraLatest ro rd.md=0 rd.dm=0 quiet
rdblacklist=nouveau nouveau.modeset=0 rd.lvm.lv=vg_wolf/fedoraLatest rhgb
KEYTABLE=uk rd.luks=0 SYSFONT=latarcyrheb-sun16 rd.lvm.lv=vg_wolf/swap
LANG=en_US.UTF-8
[  1186.235] Build Date: 27 March 2012  05:11:41AM
[  1186.235] Build ID: xorg-x11-server 1.11.4-3.fc16 
[  1186.235] Current version of pixman: 0.24.4
[...]
-- 
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   The views expressed in this e-mail may or may not reflect those of the
   author and do not necessarily reflect those of Isotek Oil and Gas Ltd.

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