From Clippers.com:
The Los Angeles Clippers and General Manager Mike Dunleavy today have severed ties. Dunleavy previously also served as the team’s head coach from 2003-04 until February 4, 2010, when he resigned as head coach.
The organization has determined that the goal of building a winning team is best served by making this decision at this time. The team has simply not made sufficient progress during Dunleavy’s seven-year tenure. The Clippers want to win now. This transition, in conjunction with a full commitment to dedicate unlimited resources, is designed to accomplish that objective.
