Ross Mayfield posted a facinating article on how successful decentralization will only come thru less process and more openness. No amount of process in a large company is going to enable the rapid information sharing that is needed in a large organization. Only tools like wikis ang blogs enable that kind of communication.
Speaking from experience, I think he’s hit this one right on the head. I faced many of the same issues in my division of just 100 people and found that a simple wiki helped foster communication. As leaders in our organizations I think we all need to champion open communication as it is the best way to make good decisions and encourage collaboration.