I use the following simple search tag:
{exp:search:simple_form channel="content|symposium|whos_who|nieuws" results="9" search_in="entries" where="all" result_page="zoeken/index" no_result_page="zoeken/no-result" status="not closed"}
But weirdly enough, it displays entries when the search is done which are closed. It doesn't matter what I put the status parameter on. How can this happen?