I know this is just the cardinal rule of what not to do. But really, I have a new mac pro arriving today and I'm swamped with work. I'm very tempted to just swap the system drive out and hit the ground running on my new machine rather than spend 10 hours doing installs. Believe me, I would love to have a fresh install of everything with out all the old files I don't need clogging up my system. But just how bad do you guys think it is to do this?