i think have read (hopefully) all the posts about PageExpiredExceptions
(Serializable etc.).

I have a DropDownChoice, that updates a List of Links via Ajax (please see
code below). 
After updating the List of Links or clicking on one of the links the *second
time* in IE8 i receive a different session-id and therefore the
PageExpiredExcption appears. 

Code for updating the list:
dropDownChoice.add(new AjaxFormComponentUpdatingBehavior("onchange") {
                        private static final long serialVersionUID = 

                                protected void onUpdate(AjaxRequestTarget 
target) {
                                 //Reload a list of links


- Problem only in IE8
- In Firefox everything works fine.
- Wicket 1.4.
- The application runs on WAS7
- No session replication
- played around with settings e.g.
getPageSettings().setAutomaticMultiWindowSupport(false); and caching.
- Problem appears after the second Ajax-Call.
- Error message is:
onRuntimeException Cannot find the rendered page in session

Thanks for any help!

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