Right now I'm in the process of upgrading kde to 3.5.5, and I've gotten
problems with kdesktop and kscreensaver with error messages similar to:

/usr/lib/libGL.so: undefined reference to `_nv001215gl'

There would be at least 3 or 4 lines, each with a different reference. In
order to get the compiling going again, I would do a:

eselect opengl set xorg-x11.

Normally, I'm running the 8776 version nvidia-drivers, which I switch back
to after the compiling is done. But now I'm wondering; since I'll be
running with a different libGL than the one I compiled with, will that
cause any problems while running?

Thanks,
PRose