As mentioned the current build of Snow Leopard is a multiple-time carryover from like 2009. I want to do some cleanup as I think some of the system files might be screwed. My boot time has slowed down somewhat, and general bizarre behavior, i.e. startup apps disappearing mysteriously. I did a clean install and then restored files from Time Machine, as my Time Machine backups do not include the system folder...I figured that should clean stuff up, but as I look in \Library\Preferences\SystemConfiguration, it's clear to me that things just aren't right. A number of files are renamed as "plist~orig" and "plist~save" and stuff. I thought about a clean install, but the problem is I don't want to track down serials for all of my apps, especially ones like VMWare where I have to log into the website to get it. I also have a customized HOSTS file that I'd rather not recreate, unless I have to. And then there's the passwords - oh my, the passwords. So, here's the question. If I do Archive and Install will that clean up the system files and restore them to their proper working order, but leave my apps and registrations and whatnot intact? OR is there a cleaner way to do what I'm trying to do?