Addressbook error.

Does anyone know how to "fix" the addressbook?! Any editing of a contact or deleting of one only appears to have worked. Once you save the addressbook, quit, and then bring it up again, the "old" contact is as it was. I've about given up trying to fix this.....can't find what file and where to kill, change permissions on, or whatever! Thanks, Fred -- "Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." - Benjamin Franklin 1759