Comment 52 for bug 58232

For anyone still a little foggy on how to fix this, especially beginners, here is a link to another way to do this:
http://ubuntuforums.org/archive/index.php/t-392734.html

Basically you can just issue this command: sudo nvidia-xconfig --add-argb-glx-visuals
which will add the appropriate line (Option "AddARGBGLXVisuals" "True") to the /etc/X11/xorg.conf file in the appropriate places.

For my setup with dual monitors, this worked perfectly. It added that Option line above to both Screen sections of the xorg.conf. When I was doing it manually I had only added it once to the default Screen section and it did not solve the problem because it needed to be in both Screen sections. The command above handles putting it in both.

Thanks everyone for you help,
Wes