Terminal Server 2003; not accepting connections

The Terminal Server service is running however it is not listening on the defined port 3389 (verified by running netstat -a). (I have verified in the registery that the default terminal server port number hasn’t changed)I’ve reinstalled the Terminal Services component of Windows server to no avail…

This problem appreared overnight with no server modifications I am aware of.

Does anybody have any further troubleshooting suggestions???

Thanks in advance.