Only for that Java applet. The web page loads normally. So the G web server config files are okay.
After I posted the message, I re-installed labVIEW , ITK and imageupdate server . Now it seems to work okay. But there is one thing I have noticed and that is the image update server messes up with the port (defualt 80) of the http server. ie., the G web server stops , saying 'the port is not accessible'. When the port number is changed to anything other than 80, it starts working. This problem has occured two times. Both the times I have solved it by re-installing all applications. I would like to know if this has happened to any one else.