Hi there! So for many years now I've been installing my OSX versions via an external drive. This includes Tiger, Leopard, and now of course Snow Leopard. Always loved this method as there is no need for any discs and the wait time is shorter. Now, recently I got a brand new Macbook Pro (i7, 4GB RAM, etc) and I was getting this weird feel from using the preinstalled version so I decided to simply reinstall using the retail image/disc I had used for all my other, older Mac computers. My usual tested process is as follows: 1. Took an authentic retail Apple OSX Snow Leopard DVD and saved it as image. 2. Using "Carbon Copy Cloner", expand the image into a partition my external USB drive. No problems so far, everything working like clockwork. 3. I restart my new MBP, hit option--everything shows up fine--click the OSX bootable image and it moves right to the expected "Grey/White Apple Boot Logo"... ...and then stays there for 15 minutes (with no activity indicated by the external drive) until I just restart cold. Ummm ok... so let me try with one of my older computers. A 2007 model MBP... Restart, boot from the image/partition. BAM! Instantly I get full activity from the USB drive and within 2 minutes I'm at the installation welcome screen. What.... the.... hell...? It has proven impossible to search for any similar threads/situations/google on this issue. What is going on? Do I have a faulty MBP? Is there a BIOS firmware issue. WTH? Please help me! Thank you, thank you!