Hi, JBoss AS 4.2.3 JBM 1.4.2.GA-SP1 Starting JBoss AS, open jmx-console and open the mbean view for post office (service=postoffice), look at the Value fields of ControlChannelConfig and DataChannelConfig, you will see incomplete values for them, like: <UDP discard_incompatible_packets= The result is that, if you click 'Apply Changes' button, the console will end in exception: exception org.jboss.util.NestedRuntimeException: XML document structures must start and end within the same entity.; - nested throwable: (org.xml.sax.SAXParseException: XML document structures must start and end within the same entity.) org.jboss.util.propertyeditor.DocumentEditor.getAsDocument(DocumentEditor.java:88) org.jboss.util.propertyeditor.ElementEditor.setAsText(ElementEditor.java:41) org.jboss.util.propertyeditor.PropertyEditors.convertValue(PropertyEditors.java:260) org.jboss.jmx.adaptor.control.Server.setAttributes(Server.java:190) org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.updateAttributes(HtmlAdaptorServlet.java:252) org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.processRequest(HtmlAdaptorServlet.java:98) org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.doPost(HtmlAdaptorServlet.java:82) javax.servlet.http.HttpServlet.service(HttpServlet.java:710) javax.servlet.http.HttpServlet.service(HttpServlet.java:803) org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) root cause org.xml.sax.SAXParseException: XML document structures must start and end within the same entity. org.apache.xerces.parsers.DOMParser.parse(Unknown Source) org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source) org.jboss.util.propertyeditor.DocumentEditor.getAsDocument(DocumentEditor.java:79) org.jboss.util.propertyeditor.ElementEditor.setAsText(ElementEditor.java:41) org.jboss.util.propertyeditor.PropertyEditors.convertValue(PropertyEditors.java:260) org.jboss.jmx.adaptor.control.Server.setAttributes(Server.java:190) org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.updateAttributes(HtmlAdaptorServlet.java:252) org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.processRequest(HtmlAdaptorServlet.java:98) org.jboss.jmx.adaptor.html.HtmlAdaptorServlet.doPost(HtmlAdaptorServlet.java:82) javax.servlet.http.HttpServlet.service(HttpServlet.java:710) javax.servlet.http.HttpServlet.service(HttpServlet.java:803) org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) note The full stack trace of the root cause is available in the JBossWeb/2.0.1.GA logs. Is that a known issue? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4213608#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...