I just upgraded my hard drive in my macbook pro to the 500 GIG western digital 7200 rpm drive. Now it seems like my systems is a bit slower that when the 200 gig drive was in it. Any suggestions? My configurations is as follows: Model Name: MacBook Pro Model Identifier: MacBookPro4,1 Processor Name: Intel Core 2 Duo Processor Speed: 2.4 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache: 3 MB Memory: 4 GB Bus Speed: 800 MHz Seems like it boots a bit slower as well. I used Super Duper to clone the disk.