Hello to all, perhaps I have found a problem with JSF and use of the browser's tabs. I have installed the "JBOSS tools" on eclipse for make a "conversation" template ( "File->New->Conversation Seam" ) and I've followed the wizard step to step. So started the JBOSS AS and try to use the proof of concept of the conversation. I open some tabs ( 10 for clearly ) and in everyone i put the same link ( http://localhost:8080/conversation_test/conversation.seam ) so i start to do the monkey... :) I begun a new conversation on every tab ( with the "begin" button ) and switch to other tab for begin a different conversation. So I come back to the starting. I jumped from tab to tab, to increment the value management in that conversation ( with the "increment" button ). To do that, after some jump i recived "Error Something bad happened :-( Your session has timed out, please try again" and found some error in the trace "Caused by: javax.faces.application.ViewExpiredException: viewId:/conversation.seam - View /conversation.seam could not be restored." However if i check the debug page I found that all the conversations still been alive. I try the same thing with a simple page with an action and a PAGE context component and received the same problem. Have some idea about this?