I bought the 13" 2.26ghz MBP last weekend. I had the Apple store upgrade from 2GB to 4GB. When I got home and took it out of the book, I noticed it wobbled since all 4 feet aren't touching the desk. I've tried it in different locations, so I don't think it's my desk. Has anyone else noticed this? I just find it annoying. I have an appt with the Genius bar on Friday for them to take a look.