I updated my JBoss 4.0.4.GA configuration to use the latest EJB3 (rc9) and JBoss portal.
During server startup I see nothing wrong, but right after the server comes up, it begins spamming the console with this:
16:19:54,968 WARN [UDP] discarded message from different group (portal.hibernate). Sender was onosendai:32893
16:19:57,256 WARN [UDP] discarded message from different group (TreeCache-Group). Sender was onosendai:32890
This repeats about once every second. "onosendai" is my hostname by the way.