I JUUUUUST ordered my mac pro two days ago and it has yet to ship. I had a 2.66 GHZ, 750GB HDD, 2MB RAM, X1900 Config. I'm planning on calling up Apple today and cancelling my MP before it ships in a few days, so I can wait for the 8 Core MPs. Before I do, does anyone know about their cancellation policies, since I cannot do it online (Because part of my order already shipped). Apple's website says that it wont take any returns of "custom order" machines, so I dont want to wait to receive it. Does anyone know about apple's cancellation policy before the computer ships?