Ok, I have created a new release-candidate to hopefully tackle the issue that was brought up where X11 failed to start on systems that did upgrade-installs of leopard (which resulted in /etc/profile not setting $PATH as expected). Please try out this updated release candidate and let me know of any further problems with the installer or show-stoppers. http://xquartz.macosforge.org/downloads/X11-2.1.2-rc3.pkg Thanks, Jeremy