Tim O'Reilly at O'Reilly Radar – Thoughts on the Whitehouse.gov switch to Drupal:

"Yesterday, the new media team at the White House announced via the Associated Press that whitehouse.gov is now running on Drupal, the open source content management system. That Drupal implementation is in turn running on a Red Hat Linux system with Apache, MySQL and the rest of the LAMP stack. Apache Solr is the new White House search engine."