This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
Exactly where does that message appear?
Exactly how are you trying to connect?
Is this a new Tomcat installation?
Is Tomcat installed as a service or an application?
Did it work before something get modified?