I have a JBoss cluster of 3 nodes Version 4.0.4 But lately i am seeing the following errors in the server.log file. 15:15:39,172 ERROR [UDP] exception=java.io.StreamCorruptedException: invalid stream header at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:763) at java.io.ObjectInputStream.(ObjectInputStream.java:278) at org.jgroups.protocols.UDP.handleIncomingUdpPacket(UDP.java:670) at org.jgroups.protocols.UDP.run(UDP.java:249) at java.lang.Thread.run(Thread.java:595) A search on the google is suggesting me to look at my JGroups configuration. But what exactly should i modify for these errors to go away? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4246540#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...