San Francisco's Department of Human Services wants to fire a child welfare supervisor accused of downloading and passing around gay S&M porn pix -- hot shots that starred a psychiatrist from the city's foster care program. Higher-ups in the welfare division are also facing possible discipline for moving too slowly to stop the photo pass-around, and for failing to report the supervisor's actions to the proper authorities. The department's director, Trent Rhorer, declined to discuss details of the case, saying it was a personnel matter. He did, however, confirm that an internal investigation was under way "into all aspects of...