Narayan Newton and I gave a talk at Drupalcon on the state of the http://drupal.org infrastructure. Narayan, Gerhard, David, and myself are currently working on a infrastructure budget proposal for the Drupal association. This proposal will give you some insight into the challenges of running Drupal.org and why it is not just another Drupal site. In fact, our use of Drupal as a web application platform for Drupal.org pushes the Drupal project in many directions that lead to innovation.