[Zope] NT Service doesn't respond on stop request

I have Zope 2.4.2 running as service on Windows 2000. The service starts okay, but when I stop it from the Management Console, the service stops and then about a minute later I get the message "Could not stop the Zope (WebSite) service on Local Computer. Error 1053: The service did not respond to the start or control request in a timely fashion." If I enter the "NET STOP WebSite" command from a command window, the service stops and the command completes without any error messages in about 20 seconds. Any idea why I'm getting the error message when stopping the service from the Management Console? Thanks Mark Snellings