Page Rendering occurs blank page because of Old Cookie

Question

Hi!

I am developing application using J2EE (JSF,RichFaces, Jetty/Glashfish). Sometimes when I click on some link I get nothing returned to the browser at all (blank page). But when i refresh the page all contents appears in page.

After some trail and error i found that it is cookies problem: It happens bez some old cookie not deleted by browser so this problem occurs.

We also change web.xml file:

but it creates more problem it doesn't maintain the session in application.

Please friends if you have any suggestion on this problem help us.