The machine is a newish G4 733Mhz 256K ram with a radeon 7500 card. I have installed the Fink version of pymol with the Fink supplied Xfree. It works but is noticably slower than pymol on my 500 Mhz K6/lintel box, also with a radeon 7500 and Xig xserver.
It would seem that the mac installation is not benefitting from the graphics hardware despite claims of full acceleration in the xserver. If there is a trick here that I am missing please let me know. Thanks Russell Poyner