When someone changes their email address, I go to the address book, delete the old address and enter the new one. Then when I go to send them an email and start typing their name, it brings up the old address as well as the new one - so I have to select the address. Why is this? They are obsolete addresses and I want them to just go away! When I go the address book sure enough there is no sign of the old deleted address so I don't know why Mail is auto-filling them. Thanks for any help.