Just out curiosity (and boredom) I was wondering what types of windows laptops did you leave behind before getting your macbook? I am going to be getting a macbook soon for med school so until then I am still using my sony vaio n505ve as my laptop. I had a dell inspiron 1100 but i left it on a carpet one day and it died. My vaio is smaller and lighter than a mba but it has a celeron 300 mhz processor 64 megs of ram (The machine grinds to halt loading powerpoint files bigger than 64 megs) so as you can see this macbook will be quite an upgrade to what I am used to.