fehler i java

Hej.

Jeg får en fejl :

DisplayText: Error getting session ID to determine if browser cookies are set = java.io.FileNotFoundException: 10.9.10.51:1741//CSCOnm/servlet/com.cisco.nm.cmf.servlet.CsAuthServlet?cmd=getSessionId
java.io.IOException
    at com/ms/net/wininet/WininetURLConnection.getInputStream
    at com/cisco/nm/cmf/security/jaas/JaasAppletEngine.request
    at com/cisco/nm/cmf/security/jaas/JaasAppletEngine.validateSession
    at com/cisco/nm/cmf/security/csLoginPanel.validSession
    at com/cisco/nm/cmf/desktop/csNavigator.start
    at com/ms/applet/AppletPanel.securedCall0
    at com/ms/applet/AppletPanel.securedCall
    at com/ms/applet/AppletPanel.processSentEvent
    at com/ms/applet/AppletPanel.run
    at java/lang/Thread.run
java.lang.NullPointerException

i javakonsollen hver gang jeg hopper ind på en side.. og jeg har sat (både i IE og NN) sikkerhedslevel *MEGET* lavt!

Cookies kan bare komme an.. Men den laver stadig ovenstående fejl.. Hilfe..