Try installing...
Code:
sudo apt-get install python-opengl
sudo apt-get install libgtkglext1
Or search for them in synaptic of course.
Mabey this too if the above dont solve it.
Code:
sudo apt-get install python-gtkglext1
EDIT:
I gather you have decent hardware zing but sometimes having Compiz running at the same time your trying to play graphics intensive games & stuff can be a problem.Try shutting compiz down & switching to the normal Window manager...Metacity.
Just use ALT-F2 rather than the terminal if you want...a bit like the RUN dialogue in Windows...
that will switch you over to metacity and kill compiz while.....
will switch compiz back on.