I am about to buy a 2.16 GHz black macbook (kinda nervous, this is gonna be my first Mac). In any case, I am buying the base 1GB model and am planning on upgrading on my own and my question was whether it is worth upgrading to 4GB which is maximum allowed I believe or if I should just upgrade to 2GB. I'm asking because I ran the crucial.com's utility that recommends memory for a given system and it recommended a 2 GB (1+1) update to me. Are there any problems with the 4GB upgrade that I'm not aware of? Is it not worth it?