I'm a soon to be newbie to a Macbook and was just wondering how much of a RAM hog is Mac OS X? I ask this because the base models of most Macs have only 2 gigs of RAM. Now on Windows, 2 GB won't get you anywhere.(well, maybe an hour of using a single app.) How much can you get from 2 GB of RAM on a Mac compared to 2 GB of RAM on a similar spec PC? My guess is that it uses RAM better, but I'd like to have an answer. Thanks!