After much convincing by fellow forum members, I've decided to do an Archive & Install for Tiger. I'm still having trouble understanding it though. Will it keep all of my applications and their settings, including iTunes music and iPhoto pictures, or will I have to reinstall all of my applications and re-load all of these settings off of a backup? Yes, I know I should backup anyways, so please save that lecture. I already have everything pretty much backed up for the install. I've heard that A&I is basically an upgrade but "cleans up" your hard drive so it's running like new. Is this true? Please help before I order Tiger!!!