Comment # 2 on bug 1017360 from Robert Nelson

Applications that use 32-bit code to access the hardware 3-D graphics
acceleration work fine using the drivers downloaded from Nvidia and fail using
the community repositories. Examples of such applications are ANSYS fluent and
gambit (both of which use HOOPS 3-D software).

These applications work fine when running without hardware 3-D graphics
acceleration ("-driver X11" or graphics remotely exported)).

Applications that use 64-bit hardware acceleration work fine.

The software fails with the following message:
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast

which indicates that it has tried to drop back to software graphics emulation.

On a mchine using the community repository, in /usr/lib, the command "ls *GL*"
shows no files. in /usr/lib64, it shows:
libEGL.so          libGLESv1_CM.so.1.1.0  libGLEWmx.so.1.13.0  libGL.so.1     
libGLU.so.1.3.1    libEGL.so.1            libGLESv2.so.2   libGLEW.so.1.13     
libGL.so.1.2    libQtOpenGL.so.4 libEGL.so.1.0.0    libGLESv2.so.2.0.0    
libGLEW.so.1.13.0    libGL.so.1.2.0  libQtOpenGL.so.4.8 libGLESv1_CM.so.1 
libGLEWmx.so.1.13      libGL.so             libGLU.so.1    
libQtOpenGL.so.4.8.6

On a machine with the driver from nvidia.com installed, these *GL* libraries do
appear in /usr/lib.

This is why I thought it was a 32 bit library problem.