I wonder when Apple will take a higher share in the enterprise market, i.e. when the "halo effect" from use of iphones, later maybe ipads, in big corp.s will lead to increased use of macs/os x there too. if it happens, i.e. when os x reaches a certain threshold of trust or viability in enterprise systems, it will probably be something that happens quite fast. in a sense, there'll be a network or lemming effect where you'd just need one big firm to switch to make it "acceptable" for other "orifices" to do so too.