Comment 30 for bug 985202

Yes, downgrading all libraries for the whole systems causes lots of problems, including with some gnome applications and programs that use OpenGL. We have developed a better workaround, that modifies the environment of the `kwin' binary only. The rest of the programs run unaffected with the default libraries as provided by Ubuntu.

I'm attaching the wrapper script for kwin that we are using (read the comments at the top of the script).
I'm also going to attach the output of "ls -lR" for the directory where the downgraded libraries are kept.