Exception on Richfaces demo site

[lmk]

Hi guys,

are you aware of the session expired exception on demo site.?
a loosy seam exception page is shown with the message:

Exception during request processing:
Caused by javax.servlet.ServletException with message: "viewId:/richfaces/dataTable.jsf - View /richfaces/dataTable.jsf could not be restored."
...
Caused by javax.faces.application.ViewExpiredException with message: "viewId:/richfaces/dataTable.jsf - View /richfaces/dataTable.jsf could not be restored."

[nbelaevski]

Hello,

How do I reproduce that?