Does OS X require you to know unix commands? Do you even have a terminal? I'm just curious how much you'll notice the unix stuff in the OS. As much as i love the stability of unix, i don't want everything to change in OS X. I love the way Mac OS works, and i don't want it to become a unix GUI. Honestly, i think linux is hard to use. You need to know the commands in the terminal, and then the GUIs are just weird. Advanced PC users like myself figure it out easily, but using root accounts, and those weird commands to install files isn't fun or easy. I sure hope Mac OS X doesn't go that way.