Democrat Barbara Boxer and Republican Carly Fiorina went at each other tooth and nail in a debate broadcast on radio today by Pasadena station KPCC. In a race becoming increasingly personal, Boxer attacked Fiorina for supporting Prop 23, which would postpone enforcement of Governor Schwarzenegger's green-house legislation. Fiorina gave as good as she got, branding the Senator “ineffective." Carolyn Lochhead reports from Washington for the San Francisco Chronicle.