Authenticated user is logged out when attempting to access an unprotected resource

Pls referred

http://www-01.ibm.com/support/docview.wss?ca=wpwcmfaq&rs=688&context=SS4SHV&context=SSRHJP&context=SSLTPF&uid=swg21264724&loc=en_US&cs=utf-8&lang=en

Public render parameters and Redirect

Please referred below link
http://www.ibm.com/developerworks/forums/thread.jspa?threadID=335737