I have this problem connecting MSSQL3 via Enterprise Manager, sometimes if I leave it long enough, up to an hour in some cases, I can get the list, but it always says no items when I first open the databases folder and I have to refresh the window.
interesting, suddenly, my DNN installation is giving a UPGRADE ERROR - Could not connect to database. It was working great earlier, and i've made no changes to anything.
opened a ticket for it... perhaps the h-sphere patch changed something?