You know, I'm not sure your description of the easyJet code situation is right. I seem to recall, from a discussion somewhere here, that U2 is the overall code for all the easyJet brands. I have never seen DS on an airport board but there are very few airports that use the two letter U2 code (I think NCE and SAW do). I seem to have some odd recollection (I think it was earlier this year) of seeing some easyJet Switzerland flights listed as U2 at (I think) a Spanish airport. I find it interesting and would like to be sure one way or the other.