[jcifs] NtlmHttpFilter - Uncaught SmbException

[Bill Parkinson]

Using JCIFS 0.9.2 and Tomcat 4.1.30 and JDK 1.4.2_04-b05

The filter starts off working correctly.  Then after a while we get this 
message as a Tomcat 500 error:  Later it works again...

jcifs.smb.SmbException: An error occured sending the request.
java.net.ConnectException: Connection refused: connect
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:305)
	at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:171)
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:158)
	at java.net.Socket.connect(Socket.java:452)
	at java.net.Socket.connect(Socket.java:402)
	at java.net.Socket.<init>(Socket.java:309)
	at java.net.Socket.<init>(Socket.java:211)
	at jcifs.netbios.NbtSocket.<init>(NbtSocket.java:59)
	at jcifs.smb.SmbTransport.ensureOpen(SmbTransport.java:275)
	at jcifs.smb.SmbTransport.send(SmbTransport.java:602)
	at jcifs.smb.SmbTransport.negotiate(SmbTransport.java:847)
	at jcifs.smb.SmbSession.getChallenge(SmbSession.java:59)
	at jcifs.http.NtlmHttpFilter.doFilter(NtlmHttpFilter.java:109)

That particular line of the Filter is not in a try catch block...

Anyone seen this before?  Any suggestions?