This release contains Xquartz-1.4.2-apple42.
Download X11-184.108.40.206.dmg, and open it to install with Leopard's Installer. As of 2.2.0, you do not need to have Leopard's X11 package installed (but it is alright if you do).
OS-X 10.5.7 or later is required to install this package.
Mac OS-X Updates
You will need to re-install this package after future OS, and Security Updates delivered through Apple's Software Update. Additionally, you should reinstall this package after installing XCode.
The software supporting the deprecated imake build system is not provided in this package. If you need imake and xmkmf, please install the X11 package that came with your Leopard DVD before installing this version. Alternatively, you can compile these packages on your own or get them from a third party such as Fink or MacPorts. The darwin configuration files used by the imake build system are outdated and not supported. Developers using this build system are advised to migrate to autoconf.