A couple of weeks ago, we talked about Dell's latest Ubuntu notebook, the XPS 13 "Developer Edition", also dubbed "Sputnik 3". This is the kind of notebook that most Linux fans would love to have; it packs in a fast Intel Core i7 dual-core, a 256GB SSD, 8GB of RAM, and a crisp 1080p 13.3-inch display. As fantastic as the XPS 13 is, though,...