No, I have the latest updates for Leopard + the updated X11 from MacOS Forge. I managed to get it work, though. I removed my existing libOSMesa.4.dylib and linked the libOSMesa.7.dylib as directed in the posts above.
sudo mv /usr/X11/lib/libOSMesa.4.dylib /usr/X11/lib/libOSMesa.4.dylib.backup
sudo ln -s /usr/X11/lib/libOSMesa.7.dylib /usr/X11/lib/libOSMesa.4.dylib Wonder if this will affect other programs I run with X11…