You make good points. My choice not to upgrade is more pragmatic than anything else ... Work to do and so many hours to do it in. And I agree, knowing about the

You make good points. My choice not to upgrade is more pragmatic than anything else ... Work to do and so many hours to do it in. And I agree, knowing about the certification makes it more like running hackintosh - one dev does that here and he has had several issues with Xcode that I do not on my mpb. I also learned Linux on the command line mainly interacting with the typical LAMP app running on AWS. They were mainly Red arhat or CentoS and I never had to interact with a Linux desktop until about six months ago and I guess I just assumed that it was 2012 - surely the desktop/upgrade issues of the ninety's and aughts. I don't think it is anyone's 'fault' it is just a difficult problem to solve. Knowing that there are Ubuntu certified desktops out there is useful info I can pass along to my boss before they buy an new device box.