I have an early 2011 13" MB Pro. I believe it was the first one to come out with a core i5. It was the best laptop I've ever owned. However, over the last 2 years it seems like it has gotten progressively slower. First when I upgrade to Lion and again when I upgraded to Mountain Lion. I also upgraded it to 8Gb of Corsair Mac Memory about a year ago. I feel like this is a trend with Apple since every iPhone I've owned has gotten slower and slower with each iOS update. Will resetting the SMC and PRAM fix this problem or should I revert back to Snow Leopard? It takes forever to boot and opening applications takes a lot longer than it used to. I do format the hard drive and start with a clean OS install about once or twice a year. Thanks for the help.