Hello everyone, I just upgraded my memory on my mid 2010 macbook pro i5 2.4 from 4 gigs to 8 gigs. Oh My God! What a diffrence! this machine is super fast now, I just turned on my vmware fusion, and it is super fast. I never imagined that adding 4 more gigs could give this computer some much speed. I was never able to run my windows seven on my fusion this fast.And now it is super fast! I could surf the web fast, can run itunes music on my mac and use my internet browser on my windows seven with no problems. I totally recomened upgrading your memory from 4 gigs to 8 gigs.