I have a black Macbook 2,1 (2.0 ghz core 2 duo, 2 GB RAM) and am curious if anyone out there has switched from this notebook to a Macbook Air 11" with 1.4 ghz and 4 GB of RAM ? I'm eyeing that machine and sort of want to make it my primary computer. I'm a journalist, so I need a machine for writing articles, blog posts, e-mails. Nothing fancy. The occasional edit in Photoshop. But would I be taking a step backward -- a huge step backward?