Pending changes stops processing events after ItemNotFoundException

The result is that update are not observed in the CMS once the error has occured

19.05.2009 15:18:27 ERROR [org.hippoecm.frontend.JcrObservationManager$JcrListener.process():541] Failed to parse pending changes
javax.jcr.ItemNotFoundException: c7ea5f65-aa2e-45c6-853e-3f254a836dea
at org.apache.jackrabbit.core.HierarchyManagerImpl.getName(HierarchyManagerImpl.java:429)
at org.apache.jackrabbit.core.CachingHierarchyManager.getName(CachingHierarchyManager.java:244)
at org.hippoecm.repository.jackrabbit.HippoHierarchyManager.getName(HippoHierarchyManager.java:68)
at org.apache.jackrabbit.core.NodeImpl.getName(NodeImpl.java:2048)
at org.hippoecm.repository.decorating.ItemDecorator.getName(ItemDecorator.java:96)
at org.hippoecm.repository.decorating.checked.ItemDecorator.getName(ItemDecorator.java:119)
at org.hippoecm.frontend.JcrObservationManager$NodeCache.process(JcrObservationManager.java:150)
at org.hippoecm.frontend.JcrObservationManager$NodeCache.<init>(JcrObservationManager.java:126)
at org.hippoecm.frontend.JcrObservationManager$JcrListener.process(JcrObservationManager.java:524)
at org.hippoecm.frontend.JcrObservationManager.processEvents(JcrObservationManager.java:754)
at org.hippoecm.frontend.Home.processEvents(Home.java:132)
at org.hippoecm.frontend.Main$6.processEvents(Main.java:289)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1175)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1252)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1353)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:493)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:355)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:200)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.hippoecm.frontend.plugins.login.ConcurrentLoginFilter.doFilter(ConcurrentLoginFilter.java:54)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Unknown Source)