We have operated a Citrix environment for over 10 years now. Users have become conditioned to the 'virtual' desktop model. However, server based computing is not without its challenges. Doggie applications can really take the gloss off a pristine installation.

That's where I see VDI or even blade PCs coming to our aid. We are in the early stages of looking at building virtual PC in a VMWare environment to handle the stuff that should never have made it to market in the first place.