The longtime executive officer of the embattled California Board of Registered Nursing resigned today, a day after Gov. Arnold Schwarzenegger replaced more than half of the panel. Ruth Ann Terry had been the appointed executive officer for nearly 16 years and had been on the staff of the board for 25. Terry's decision and Schwarzenegger's actions follow an investigation which found that the board often takes years to investigate and discipline nurses accused of egregious misconduct.