HI, I'm getting the same exception with JBoss 4.2.1-GA server. I am=0Ausing JSF= 1.2 anf myfaces Trinidad 1.2.8. The session time-out=C2=A0 is 300=0Amins. = But I get session time out within 5 mins.
However,if I set richFacesUI.jar in the lib of te Jboss directory then this= problem gets resolved. But with it the view root becomes an Instance of AjaxViewRoot class instead= of the UIViewRoot class. --Dushyant