<A target="_blank" href="http://blog.nashcom.de/nashcomblog.nsf/dx/domino-on-win2008-hotfix-needed-for-performance-hang-issue.htm">Daniel Nashed's customer was getting a server hang</A> when shutting down Domino on a Win2008 server. If you've run into this problem, there is a hotfix available. Daniel has posted links to more information.