Hi, I am having a problem where separate browser instances share the same session ID, ive figured it is because they use the same cookie to validate the session with the server. I would like to use URL rewriting (append the session to the url) but this requires the browser to have cookies turned off. Is there any way i can disable cookies specifically for my porlet application at the server side rather than relying on the client to switch them off (ie web.xml) ????