Hey Guys, I have a MacBook Pro CoreDuo 1,1 (as said in my signature) with 512MB of RAM. I don't know how I have survived this long wiht just 512, but leopard did speed it up from Tiger. Now I did buy RAM from crucial in the past, but I had to return it because it simply would crash my Mac after about 10 minutes of use. I would like to swap out the 512MB stick with 2 1 GB, or is more possible? Thanks for all your help!