I have been using a Mac for a long time and love it - but I really want to buy a netbook a.) to get more work done traveling on planes, since my mac pro is 17 inches of awesome b.) to get familiar with other flavors of linux.. i.e. ubuntu. Sadly I remember a time when Dell was pushing Ubuntu on their computers, but I guess times have changed. Any recommendations on which netbook brand / model you have had success running Ubuntu on?