I just installed JBoss and setup the database to use TCP. Using the Database Manager, I used a script to define some tables, and another script to add data. All seemed to work fine; the tables were listed in the left pane. When I clicked on a table, the Manager froze, and I had to close it via the task bar. The only way to return functionality to the Manager was to stop and restart JBoss, but if I clicked on a table, the Manager froze again.