DirectorDavid Nagel, Ph.D, joined the Board in July 2010. From December 2001 until his retirement in May 2005, Dr. Nagel served as the President, Chief Executive Officer and a director of PalmSource, Inc., a provider of operating system software platforms for smart mobile devices. From September 2001 to December 2001, he was Chief Executive Officer of the Platform Solutions Group at Palm, Inc., a provider of mobile computing solutions. Prior to that, from April 1996 to September 2001, Dr. Nagel was Chief Technology Officer of AT&T; Corp., President of AT&T Labs, a corporate research and development unit of AT&T; and Chief Technology Officer of Concert, a partnership between AT&T and British Telecom. Dr. Nagel currently serves on the board of directors of Align Technology, Inc.