I am currently weighing the pros and cons of purchasing a new unibody MBP (as well as which MBP to purchase). The 2.4 GHz MBP comes with 2GB of RAM stock, does anyone know what configuration it is in? Is it 1GBx2 or a single 2GB stick? How much would the loss of dual channel support hurt my performance if I went with a 3GB configuration (1GB+2GB)? Thanks.