Problem with Windows 7 NTLM authentication

Dear all,

May someone help me.

I experience an error now with jcifs-1.2.25.jar package.

I was using this authentication jar without any problems under our Windows
XP SP3 network.

Now after some tests on Windows 7 I have a failure at the authentication.
Here is the log of my application portal.

Regards

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jcifs.smb.SmbException: Transport37 timedout waiting for response to
SmbComSessionSetupAndX[command=SMB_COM_SESSION_SETUP_ANDX,received=false,errorCode=0,flags=0x0018,flags2=0xC003,signSeq=0,tid=0,pid=56368,uid=0,mid=13,wordCount=13,byteCount=99,andxCommand=0x75,andxOffset=160,snd_buf_size=16644,maxMpxCount=10,VC_NUMBER=1,sessionKey=0,passwordLength=24,unicodePasswordLength=0,capabilities=4180,accountName=adundas,primaryDomain=AMAIISLAB,NATIVE_OS=Windows
2003,NATIVE_LANMAN=jCIFS]
jcifs.util.transport.TransportException: Transport37 timedout waiting for
response to
SmbComSessionSetupAndX[command=SMB_COM_SESSION_SETUP_ANDX,received=false,errorCode=0,flags=0x0018,flags2=0xC003,signSeq=0,tid=0,pid=56368,uid=0,mid=13,wordCount=13,byteCount=99,andxCommand=0x75,andxOffset=160,snd_buf_size=16644,maxMpxCount=10,VC_NUMBER=1,sessionKey=0,passwordLength=24,unicodePasswordLength=0,capabilities=4180,accountName=adundas,primaryDomain=AMAIISLAB,NATIVE_OS=Windows
2003,NATIVE_LANMAN=jCIFS]
at jcifs.util.transport.Transport.sendrecv(Transport.java:76)
at jcifs.smb.SmbTransport.send(SmbTransport.java:619)
at jcifs.smb.SmbSession.sessionSetup(SmbSession.java:288)
at jcifs.smb.SmbSession.send(SmbSession.java:233)
at jcifs.smb.SmbTree.treeConnect(SmbTree.java:161)
at jcifs.smb.SmbSession.logon(SmbSession.java:169)
at jcifs.smb.SmbSession.logon(SmbSession.java:162)
at jcifs.http.NtlmHttpFilter.negotiate(NtlmHttpFilter.java:182)
at jcifs.http.NtlmHttpFilter.doFilter(NtlmHttpFilter.java:114)
at
weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at
weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3496)
at
weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(Unknown Source)
at
weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
at
weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
at
weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)