[The second was the first beta of Windows Compute Cluster Solution, a version of the OS aimed at scientific and financial customers who need compute-intensive systems consisting of large server clusters. This is part of Microsoft's push into high-performance computing environments, areas where it's not been particularly successful, and where Unix rules.] The problem is a compute cluster solution has not been delivered by Microsoft [in the past], ... Our goal is to build a complete platform here. Compute Cluster allows people to build applications that scale across a large number of machines. Bob Muglia