"GLX" missing on display ":0.0".
 

When I launch kppp from a shell / console I get the following
error msg: Xlib: extension "GLX" missing on display ":0.0".

kppp seems to work fine, I would like to now if this indicates a
problem I am currently unaware of.

Thanks.

You are most likely using the "nv" driver. If you want 3D graphics support for nVidia Riva/GeForce chipsets, you need to get the drivers from nvidia.com for Linux.

Thanks for the tip. I'll check it out today. I have a GF3 Ti 200.