If you get an alert similar to this.
Alert: Health Service Configuration Not Up To Date
Last modified by: System
Last modified time: 8/11/2007 10:30:14 AM Alert description: The Health Service has requested new configuration, but no has not received it for more than 90 minutes.
The problem is that the Windows firewall is running on the server that you installed the agent on and it is not communicating properly to the Management Server.
Resolution is to open up port 5724