Even though I've been using macs since 1996, I never really delved into all the OS features. My next mac, and current computer, was 10 years later... a 2007 macbook. I've now upgraded to the late model mini. Normally, my ignorant old school way once I got the new machine, would be to get out all my important applications discs (in my case, Logic, Native Instruments, Photoshop, etc) and go through the entire install processes from scratch... which in the case of Logic and NI, takes literally 10-12 hours each with all their content. I did this when going from Tiger to Snow Leopard. Then I would update everything over the internet to their latest versions. All my apps licenses allow installs on 2-3 machines. Now, I've heard off this 'migration assistant' thing and have an idea what it does, that is, transfer applications and settings from one computer/OS, to a newer one....apparently to save that huge hassle of installing everything again from scratch I take it I can find out how to do it.... apparently connect my macbook via FW to the new mini's FW....so that's not the question What I'd like to know... is this process totally infallible? One reason why I did re-install everything fresh the last time is that I'd read stuff about screw ups when people updated new OS over the previous version and stuff. So I kind of have this mistrust of the whole migratory/updating assistant/wizard thing. Am I being needlessly paranoid? I can connect my new mini to my macbook and all my apps, all their settings, all their sample content, all their prefs... will all install themselves in the right places onto Mountain Lion from where they currently are in Snow Leopard? Freaks me out...seems too much to ask from some automated process!