After waiting for over a year for a MBA update, I really don't want to lug my 17" MBP around anymore and also am becoming more and more convinced that the MBA is being phased out by Apple (I don't really know why, because I see lots of MBA's around, but perhaps I don't have a good overview?). Linux used to be my main OS and I'm planning to use this opportunity to go back. I'm sure many here have thought about MBA alternatives before. Can you help me out with suggestions for a lightweight laptop WITHOUT optical drive that will run Linux? Thanks in advance.