You may find when using the AppleTalk Networking Component with 4D Server 6.5.x that sometimes clients fail to be disconnected from the server when they quit 4D Client. This is caused by a problem with the "Register Clients at Startup" setting in the Connections tab of the Database Properties. To workaround this, simply turn this option off and instead use the 4D commands "REGISTER CLIENT" and "UNREGISTER CLIENT" to manually enable distributed task processing.