David Nagel

Director

David Nagel, Ph.D, joined our board of directors 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 LeapFrog Enterprises, Inc., Align Technology, Inc., Tessera Technologies, Inc., and Openwave Systems Inc.