I am struggling with how I am going to upgrade to Leopard. A clean install would be the best however the thought of having to backup my documents, aperture library, music, then...reinstall all my programs and reauthrize them doesnt make me all that happy. Would archive and install be my best bet? I am more concerned with a fresh install to remove all the BS pref files hanging around from old programs and other bull i might be over looking. Anyone care to weigh in on upgrading best practices?