follow on from resolution to test case, disable concurrentStoreAndDispatchTopics by default as it can lead to the store and cursor getting out of order and when the cache is exhausted, messages can potentially be missed. https://issues.apache.org/activemq/browse/AMQ-2864
activemq/trunk/activemq-core/src/main/java/org/apache/activemq/store/kahadb/KahaDBStore.java