Hi all, I just made the big purchase.... finally switched over to mac, and waiting for my macbook to arrive any day now. I got the new 2.0ghz macbook that comes with 1 gb ram... my question is: What's the real performance difference between 1gb and 2gb of ram? Is it noticeable, and is it worth it to upgrade? I use my computer for most of the day, but would not consider myself someone who does graphic design or whatnot. I use it for basic purposes -- i.e. schoolwork, internet, iTunes, downloading, etc. Would it be a good idea to upgrade to 2gb ram? Thanks!