Hello, I'm using JBoss 4.0.3SP1 under load balancer hardware and some times I have to log on twice inside my application. My application is based on Struts. I've checked the log created by Jboss and I saw some evidence of what can be causing the problem (see the log below). Does anybody have any idea of what can be the cause of the problem? Thanks in advance, Murilo ------------------------------------------------------------------------------------- 11:21:26,821 WARN [InstantSnapshotManager] Failed to replicate sessionID:l6hiN9rO1TGuC4-wTao3xg** java.lang.IllegalArgumentException: storeSession(): session is null at org.jboss.web.tomcat.tc5.session.JBossCacheManager.storeSession(JBossCacheManager.java:342) at org.jboss.web.tomcat.tc5.session.InstantSnapshotManager.snapshot(InstantSnapshotManager.java:38) at org.jboss.web.tomcat.tc5.session.ClusteredSessionValve.invoke(ClusteredSessionValve.java:91) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:138) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527) at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112) at java.lang.Thread.run(Thread.java:595) ------------------------------------------------------------------------------------- View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3961408#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...