This are the major ActiveMQ related parts:

<!– message queue initialization –>
<bean id=”connectionFactory”
class=”org.apache.activemq.ActiveMQConnectionFactory”>
<property name=”brokerURL”
value=”vm://localhost?broker.persistent=false” />
</bean>

<!– a javax.jms.Connection –>
<bean id=”connection” factory-bean=”connectionFactory”
factory-method=”createConnection” init-method=”start” />

<!– a jms session –>
<bean id=”session” factory-bean=”connection”
factory-method=”createSession”>
<constructor-arg value=”false” />
<constructor-arg>
<bean id=”javax.jms.Session.AUTO_ACKNOWLEDGE”
class=”org.springframework.beans.factory.config.FieldRetrievingFactoryBean” />
</constructor-arg>
</bean>

<!– the destination (Topic or Queue) –>
<bean id=”mailDestination” factory-bean=”session”
factory-method=”createQueue”>
<constructor-arg value=”mailqueue” />
</bean>

<!– anonymous consumer – message queue <-> persistence manager wiring –>
<bean factory-bean=”session” factory-method=”createConsumer”>
<constructor-arg ref=”mailDestination” />
<property name=”messageListener”
ref=”passthroughPersistenceManager” />
</bean>

http://activemq.apache.org/discussion-forums.html

It could be a mistake in your Java code etc? Also make sure you’re always using the latest greatest release of ActiveMQ