We've developed a J2EE application that is deployed on an IBM Websphere server. Security and session management is all being handled by the application server using JAVA session management interfaces. It creates a session ID name JSESSIONID and assigns a unique value for this. This cookie is then being use for session management. It works fine on ordinary browsers, but not for Blackberry browsers. Somehow this JSESSION cookie does not get created, but other cookies are being created. I'm not sure if BES is messing it up or we missed something on the configuration.