Hi, I just found some interesting behaviour when using request.getParameter("xxx"); On the first request everything was fine. Using the url http://localhost:8080/portal/index.html;jsessionid=004DF12089E81E6E17D6FD... the request parameter xxx was 121091. The strange behaviour happens if I klick on a link that generates another request. At this time I also get the request parameter xxx that is set to the same value as in the previous request although I do not set the parameter in the url: http://localhost:8080/portal/index.html?ctrl:cmd=render&ctrl:window=e... After experiencing with the request I found out that the workaround for my problem is clearing the parameter map: request.getParameterMap().clear(); That works for my case but I'm interested whether this behaviour is correct? I would have expected that behaviour within the session.getAttribute("xxx"), but not in request.getParameter("xxx") Thx Rene View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3968287#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...