Elizabeth Montalbano and Robert Mullins

Hewlett-Packard Co. Chief Executive Officer (CEO) and President Mark Hurd Friday confirmed that he approved a probe of HP employees, board members and journalists in an effort to find out who on the HP board was leaking confidential information outside of the company. Hurd also said he accepted the resignation of Patricia Dunn from her position as chairman of the HP board and a director, effective immediately.