To the list, I am running a powerbook g4, system 10.3.9, mail 1.3.11. All software is updated. I went to update my rules today and when I tried to edit one, it would not open. I have 8 rules and some did open, and some did not. Looked at the Mail folder in Library and saw a message sorting plist and a back up. Deleted the active one and renamed the backup. No change. Went back to a backup in mid July (I back up weekly!) and retrieved the same plist. Installed it, shutdown the PB, waited for the "elctrons to drain (!)" and restarted. No change. Then, I minimized the main mail window (hit the yellow button) and voila!, the offending rules is now editable! I never had to do that before? Is this a "new feature?" Does anyone have a suggestion to fix? (I did try deleting the mail preference file in the preference folder, but that would require me to set up my accounts all over again, and I thought that was too extreme!) Lee Ankara turkey