I really want to do the upgrade but, my mac is the 2.16, I know i will be able to run the OS but i already went throw tiger and now leopard obviously i am going to feel something migrating to snow leopard in my mac but will it be a significant slow down or something i can handle or maybe it will be faster cause in the keynote I heard that it was just a faster and better leopard I am looking to upgrade but my laptop but still plenty of months from now (hell, I might even wait for the next Generation)