Here's a question for those of you with more then one machine. What is your upgrade strategy? Will you upgrade all your macs within a day or so, or will you let one serve as the test bench for a while and only upgrade when you feel it is absolutely safe to do so. Also are your Macs all home use, all production, or a mix of the two? I have a family pac on pre order with the intention of upgrading my MacPro and my Mac book. Even though neither is a production machine I'll play it conservatively and upgrade the Macbook first. If after a week or so nothing seriously wrong with Leopard has cropped up I'll upgrade my MacPro.