I am using LDAP for authentication and users need to be able to login using their entire email address (username(a)domain.com). However, JBoss Portal seems to fail with no relevant exception resulting in a WSOD (white screen of death) when such an user attempts to login. Is this a known issue? And are there any workarounds? I am trying to replace these special characters with an underscore but since this is part of the Servlet Request, there seem to be 'n' number of places where I need to do this, and am running into RenderPortletInstanceCommand ClassCastExceptions.. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4067528#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...