Problem with Weblogic and java

[KrishnaPrasad, Uma]

I have installed weblogic 6.1 and from my java program I tried to get the initialcontext and i get an error , No server found at t3://localhost:7001 .
But when I look at the server I get an error <Error> <NT Performance Pack> - failure in ProcessSockets() - weblogic.sockets.getData- fd '2068' , numbytes '1227' java.util.empptystackexception()
I want this to be solved ASAP
pls help