Error log with org.jivesoftware.openfire.container. PluginServlet

Hi

an idea what causes an error.log entry like this:

2012.12.05 11:20:26 org.jivesoftware.openfire.container.PluginServlet -

org.eclipse.jetty.io.EofException

at org.eclipse.jetty.http.HttpGenerator.flushBuffer(HttpGenerator.java:885)

at org.eclipse.jetty.http.AbstractGenerator.flush(AbstractGenerator.java:421)

at org.eclipse.jetty.server.HttpOutput.flush(HttpOutput.java:78)

at org.eclipse.jetty.server.HttpConnection$Output.flush(HttpConnection.java:1081)

at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:161)

at org.eclipse.jetty.server.HttpOutput.write(HttpOutput.java:86)

at com.opensymphony.module.sitemesh.filter.RoutableServletOutputStream.write(Routa bleServletOutputStream.java:118)

at org.jivesoftware.openfire.container.PluginServlet.handleOtherRequest(PluginServ let.java:374)

at org.jivesoftware.openfire.container.PluginServlet.service(PluginServlet.java:11 3)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)

at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:530)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1216)

at org.jivesoftware.admin.PluginFilter.doFilter(PluginFilter.java:78)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1187)

at org.jivesoftware.admin.AuthCheckFilter.doFilter(AuthCheckFilter.java:164)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1187)

at com.opensymphony.module.sitemesh.filter.PageFilter.parsePage(PageFilter.java:11 8)

at com.opensymphony.module.sitemesh.filter.PageFilter.doFilter(PageFilter.java:52)

at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.ja va:1187)

at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:425)

at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)

at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:494)

at org.eclipse.jetty.server.session.SessionHandler.handle(SessionHandler.java:182)

at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:93 3)

at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:362)

at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:867 )

at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)

at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandler Collection.java:245)

at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.jav a:126)

at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:113)

at org.eclipse.jetty.server.Server.handle(Server.java:334)

at org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:559)

at org.eclipse.jetty.server.HttpConnection$RequestHandler.headerComplete(HttpConne ction.java:992)

at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:541)

at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:203)

at org.eclipse.jetty.server.HttpConnection.handle(HttpConnection.java:406)

at org.eclipse.jetty.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:4 62)

at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)

at java.lang.Thread.run(Unknown Source)

Suggestions are highly welcome

Walter