[jcifs] JCIFS timeouts on windows

[Justin Greene]

We have been using JCIFS for some time to communicate between our Java apps 
(running on windows) and Windows fileserver.  We constantly receive timeouts 
reading data  from the network in the form:

Caused by: jcifs.smb.SmbException: 
jcifs.util.transport.TransportException: Transport1[DATA01-
NYC<20>/192.168.0.66:445] timedout waiting for response to 
Trans2QueryPathInformation
[command=SMB_COM_TRANSACTION2,received=false,errorCode=The operation completed 
successfully.,flags=0x0018,flags2=0xC003,signSeq=0,tid=4096,pid=40125,uid=4097,m
id=651,wordCount=15,byteCount=137,totalParameterCount=136,totalDataCount=0,maxPa
rameterCount=2,maxDataCount=40,maxSetupCount=0,flags=0x00,timeout=0,parameterCou
nt=136,parameterOffset=66,parameterDisplacement=0,dataCount=0,dataOffset=202,dat
aDisplacement=0,setupCount=1,pad=1,pad1=0,informationLevel=0x101,filename=\xxxx\
mail\2006\03\07\19\20060307193527000.eml]
	at jcifs.smb.SmbTransport.send(SmbTransport.java:533)
	at jcifs.smb.SmbSession.send(SmbSession.java:228)
	at jcifs.smb.SmbTree.send(SmbTree.java:102)
	at jcifs.smb.SmbFile.send(SmbFile.java:688)
	at jcifs.smb.SmbFile.queryPath(SmbFile.java:1196)
	at jcifs.smb.SmbFile.exists(SmbFile.java:1250)
	at jcifs.smb.SmbFile.isDirectory(SmbFile.java:1323)

This timeout even occurs connecting to shares on the local machine, so it is 
not the network.  I have increased the timeout to 60 seconds (-
Djcifs.smb.client.responseTimeout=60000) and it still occurs.  Any advice on 
how to troubleshoot this would be greatly appreciated as it is really becoming 
a thorn.  There is some reference in the docs to increasing the jcifs log level 
but I cannot seem to figure out to where it logs.  Any help would be 
appreciated.

TIA,
Justin