Do the following logs make any sense?
2005.01.21 10:59:01 org.jivesoftware.messenger.handler.PresenceUpdateHandler.process(PresenceUpdateH andler.java:126) Internal server error
java.lang.NullPointerException
at org.jivesoftware.messenger.SessionManager.sessionAvailable(SessionManager.java: 356)
at org.jivesoftware.messenger.spi.SessionImpl.setPresence(SessionImpl.java:173)
at org.jivesoftware.messenger.handler.PresenceUpdateHandler.process(PresenceUpdate Handler.java:95)
at org.jivesoftware.messenger.handler.PresenceUpdateHandler.process(PresenceUpdate Handler.java:137)
at org.jivesoftware.messenger.spi.PresenceRouterImpl.handle(PresenceRouterImpl.jav a:77)
at org.jivesoftware.messenger.spi.PresenceRouterImpl.route(PresenceRouterImpl.java :50)
at org.jivesoftware.messenger.spi.PacketRouterImpl.route(PacketRouterImpl.java:88)
at org.jivesoftware.messenger.net.SocketReadThread.readStream(SocketReadThread.jav a:198)
at org.jivesoftware.messenger.net.SocketReadThread.run(SocketReadThread.java:109)