John Humphreys, now at Citrix, sees virtualization competition shifting to management

I'm sure when John Humphreys left IDC and joined Citrix last year he had to endure lots of barbs about joining "the dark side" from his analyst compatriots. Of course, his new vendor friends were probably saying the exact opposite, yet much the same thing: no more ivory tower, John; it's time to actually apply some of your insights to a real business -- after all, he now had a bunch of real, live