I've downloaded activemq-4.0-RC2 as you suggested, and the problems have gone away.
However, if I kill the central-broker while the producer is busy producing messages I lose a message. (My configuration is producer -> web-app-broker -> central-broker -> consumer.) I see from the documentation and the discussions that setting useAsync=false on the connection from the web-app broker to the central broker might fix this. I tried: <networkConnector uri="static:failover:(tcp://localhost:61616?useAsync=false)" /> but it does not seem to be supported in 4. Any ideas? -- View this message in context: http://www.nabble.com/Store-and-Forward-t1401236.html#a3784262 Sent from the ActiveMQ - User forum at Nabble.com.