The X11 packages for Mac OS X previously available here have been removed. Instead please use the newly released binary packages available via WebDAV at http://packages.opendarwin.org/. Please view the README for more information.
The DarwinPorts UnInstaller may be used to remove any packages installed on your system previously downloaded from this page. You may wish to do this before installing the new packages, since they install into different locations (/opt/local instead of /usr/local). This UnInstaller is capable of removing the new packages as well.