This session has been closed errors in logs after update all content

25.11.2009 13:35:15 ERROR [org.hippoecm.frontend.model.JcrItemModel.getPath():93] this session has been closed
javax.jcr.RepositoryException: this session has been closed
at org.apache.jackrabbit.core.SessionImpl.sanityCheck(SessionImpl.java:381)
at org.apache.jackrabbit.core.ItemImpl.sanityCheck(ItemImpl.java:137)
at org.apache.jackrabbit.core.ItemImpl.getPath(ItemImpl.java:1270)
at org.hippoecm.repository.decorating.ItemDecorator.getPath(ItemDecorator.java:91)
at org.hippoecm.repository.decorating.checked.ItemDecorator.getPath(ItemDecorator.java:113)
at org.hippoecm.frontend.model.JcrItemModel.getPath(JcrItemModel.java:87)
at org.hippoecm.frontend.model.tree.ObservableTreeModel.lookup(ObservableTreeModel.java:85)
at org.hippoecm.frontend.model.tree.JcrTreeModel.lookup(JcrTreeModel.java:108)
at org.hippoecm.frontend.model.tree.JcrTreeModel.newTreeModelEvent(JcrTreeModel.java:88)
at org.hippoecm.frontend.model.tree.JcrTreeModel.onEvent(JcrTreeModel.java:62)
at org.hippoecm.frontend.model.event.ObservableRegistry$ObservationContext.notifyObservers(ObservableRegistry.java:77)
at org.hippoecm.frontend.model.tree.ObservableTreeModel$1.notifyObservers(ObservableTreeModel.java:129)
at org.hippoecm.frontend.model.event.JcrEventListener.onEvent(JcrEventListener.java:64)
at org.hippoecm.frontend.JcrObservationManager$JcrListener.process(JcrObservationManager.java:646)
at org.hippoecm.frontend.JcrObservationManager.processEvents(JcrObservationManager.java:1050)
at org.hippoecm.frontend.Home.processEvents(Home.java:150)
at org.hippoecm.frontend.PluginRequestCycleProcessor.processEvents(PluginRequestCycleProcessor.java:37)
at org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1250)
at org.apache.wicket.RequestCycle.step(RequestCycle.java:1329)
at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1428)
at org.apache.wicket.RequestCycle.request(RequestCycle.java:545)
at org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:468)
at org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:301)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1115)
at org.hippoecm.frontend.plugins.login.ConcurrentLoginFilter.doFilter(ConcurrentLoginFilter.java:54)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1115)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:361)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:417)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:534)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:864)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:533)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:207)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:403)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:409)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:522)