I'm getting ready to purchase the higher end 15'' macbook pro, and had this interesting idea to minimize chances of getting a unit with defects, and having to deal with returning it for a new one, and losing time in this process. Does anyone know if pre-installed software is installed by actually turning the macbook on, and thereby increasing the chances of Apple catching a possible defect before they ship it to me? Or do they just put in a harddrive that has the software installed, and don't turn the computer on? If it's the first one, I'm considering getting the cheapest pre-installed software, iWork, to help minimize chances of getting a defectious unit. I'm not sure what kind of a quality control Apple performs before shipping, but apparently some people get defectious units. Anyone know the answer to my question? I've chatted online with an Apple person, and she said it would be installed by turning it on, but I think she wasn't really sure. Any thoughts appreciated.