Southern discomfort Sunday, December 28th, 2003 A few weeks ago at a ritzy fund-raiser for the Committee to Protect Journalists, my wife, Lisa, was introduced to a man named Steven Isenberg.Isenberg was once Mayor John Lindsay's chief of staff. Later, he was the publisher of Newsday. Now he teaches literature at the University of Texas in Austin.That gave them something in common: Lisa is a graduate of the University of Texas."Are you from Texas?" he asked."No. I'm a Louisianan."And he said: "Well, you're the cleanest one I've ever met."Reading Howard Dean's Christmas Eve interview in The Boston Globe reminded me...