I am calling the list operation of JR Server web service from my web application and it is executing fine. But after a connection is made with JR Server, there is a print displayed on my screen and further System.out prints of my web application get blocked. I have tried using put operation also, it worked fine too. But, same prints disappearing problem repeats.When i debugged this, i observed that this problem occurs when com.jaspersoft.ireport.jasperserver.ws.WSClient calls list or put operations Here is my log : 22:51:06,208 ERROR [sTDERR] inside list() 4.2.1org.jboss.logging.util.LoggerStream@438593 22:51:06,453 WARNING [NbPreferences] NetBeans implementation of Preferences not found: java.lang.Exception at org.openide.util.NbPreferences.getPreferencesProvider(NbPreferences.java:110) at org.openide.util.NbPreferences.forModule(NbPreferences.java:75) at com.jaspersoft.ireport.designer.IReportManager.getPreferences(IReportManager.java:1267) at com.jaspersoft.ireport.jasperserver.ws.WSClient.getManagementService(WSClient.java:649) at com.jaspersoft.ireport.jasperserver.ws.WSClient.list(WSClient.java:188) at com.jaspersoft.ireport.jasperserver.ws.WSClient.list(WSClient.java:136) at com.classes.WSClient.list(WSClient.java:84) at org.apache.jsp.Reports.putResource_jsp._jspService(putResource_jsp.java:75) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:369) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:322) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:249) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96) 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:235) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190) at org.jboss.web.tomcat.service.session.ClusteredSessionValve.handleRequest(ClusteredSessionValve.java:135) at org.jboss.web.tomcat.service.session.ClusteredSessionValve.invoke(ClusteredSessionValve.java:94) at org.jboss.web.tomcat.service.session.JvmRouteValve.invoke(JvmRouteValve.java:88) at org.jboss.web.tomcat.service.session.LockingValve.invoke(LockingValve.java:62) at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.event(CatalinaContext.java:285) at org.jboss.modcluster.catalina.CatalinaContext$RequestListenerValve.invoke(CatalinaContext.java:261) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126) at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158) at org.jboss.web.tomcat.service.sso.ClusteredSingleSignOn.invoke(ClusteredSingleSignOn.java:711) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598) at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) at java.lang.Thread.run(Thread.java:636) 22:51:06,943 INFO [AuthChallengeProcessor] basic authentication scheme selected After this whatever action occurs, there appears no print on my console. Why is it happening? any clue? I am running JR Server on different JBoss and different port that from my client application. Is there something like Jboss logging is getting suppressed when it calls a web-service? Am I missing out on any Jboss configuration especially for web-services in case of logs?