Today's issue of Government Computer News (not the most gripping title for a publication ...) has a long article on Grid. The subtitle is, although proven in academia and research, grid computing struggles to find a place in the enterprise, and the author discusses at some length both where grid has been successful and where it has yet to catch on. It's mostly a fair analysis, and the comments on continued relative difficulty of deployment are right on (although improving, thanks to tools such as Introduce). I'd suggest, though, that one reason for the challenging nature of grid deployments is often sheer ambition. Projects like caBIG and TeraGrid, for example, are complex. But they are achieving things that have never been done before.