I currently have a 5400 RPM drive in my unit. Its not performing well enough to host a virtual machine with Fusion to my satisfaction. I called the local Apple Store asking for a quote on upgrading to a 7200 and she said this was not possible and the drive size/type has to be picked at time of order. I have been working with computers for about 17 years and have never heard anything so odd in my life. Anyway.. I have a couple of questions. 1. Is it true I cannot pay apple to upgrade the drive to SSD or 7200 and stay in warranty? 2. If I do it myself are they going void my apple care even if the problem has nothing to do with the hard drive? 3. Any way of getting around them knowing what i did here.. Even if I have to replace the original drive back in it in the event I have to take it in?