So I received my MacBook Air - I had to do it - I ordered it and it turned up. But - I planned to use VMWare Fusion to manage some of the business software I implement and one of two other bits of accounting software etc.
The kicker is that I didn't buy the CD drive that came with the Air - I bought the story that said I can piggy back the drive of another machine and that'll all be OK for installs etc.
Whilst that may be true for some install routines - any of them assume an attached physical CD drive - which isn't insurmountable (no pun) - but is a mega pain in the rear. So much in fact that I'm trying now to find a quick purchase of a USB CD drive - and whilst I'm there an Ethernet dongle.
So - the lesson here - if you're buying a MacBook Air - go do it. But you must buy an additional Ethernet dongle and the CD drive. In fact I'd call on our friends in Infinite Loop to package these up. Business users today still need them - and consultants like me who visit sites regularly need both and the compromise just isn't worth the time that I've now spent trying to get around the shortfall.