Hello, I'm not sure, whether this is the correct forum. So, if not, please give me a hint for the right location. We have a JBoss 4.2.x running and offering some Corba/IIOP interfaces to client, which poll data from the JBoss. I recently noticed, that we frequently get error messages like the following: 2009-02-23 11:36:06,340 ERROR [jacorb.giop.conn] Failed to write GIOP message due to COMM_FAILURE, | in ServerGIOPConnection to 196.168.4.128:45431 (51eeec) | org.omg.CORBA.COMM_FAILURE: IOException: java.net.SocketException: Socket closed vmcid: 0x0 minor code: 0 completed: No | at org.jacorb.orb.etf.ConnectionBase.to_COMM_FAILURE(Unknown Source) | at org.jacorb.orb.etf.StreamConnectionBase.flush(Unknown Source) | at org.jacorb.orb.giop.GIOPConnection.sendMessage(Unknown Source) | at org.jacorb.orb.giop.GIOPConnection.sendReply(Unknown Source) | at org.jacorb.orb.dsi.ServerRequest.reply(Unknown Source) | at org.jacorb.orb.BasicAdapter.return_result(Unknown Source) | at org.jacorb.poa.RequestController.returnResult(Unknown Source) | at org.jacorb.poa.RequestProcessor.run(Unknown Source) | The remote IP address is varying, more or less all clients (about 10 in total) are effected. What is going wrong here? I haven't found any useful info on the net so far. Thanks, Heiner View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4212225#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...