Messages are read from queue but not removed
--------------------------------------------

                 Key: AMQ-962
                 URL: https://issues.apache.org/activemq/browse/AMQ-962
             Project: ActiveMQ
          Issue Type: Bug
          Components: Broker, JMS client
    Affects Versions: 4.0.1
         Environment: Java Virtual Machine: Java HotSpot(TM) Server VM version 
1.5.0_06-b05JIT 
compiler:  HotSpot Server Compiler
Operating System:  Windows XP 5.1
Architecture: x86
Number of processors:  1
Total physical memory:   1,048,048 kbytes
Free physical memory:     107,240 kbytes
Committed virtual memory:     374,048 kbytes
Total swap space:   2,518,944 kbytes
Free swap space:     721,416 kbytes

            Reporter: Randy
            Priority: Critical
             Fix For: 4.1


Using Spring, configured a VM message broker (non-persistant) and a message 
consumer that reads messages from queue.

Messages are read from queue, but despite calling message.acknowledge(); 
messages remain on the queue (and consume memory).

I turned off optimiseAcknowledge.

May be related to bug# AMQ-716.

          <amq:broker id="broker" useJmx="true" persistent="false">
            <amq:transportConnectors>
              <amq:transportConnector uri="tcp://localhost:0" />
            </amq:transportConnectors>
          </amq:broker>

         <!-- a pooling based JMS provider -->
          <bean id="jmsFactory" 
class="org.apache.activemq.pool.PooledConnectionFactory">
            <property name="connectionFactory">
              <bean class="org.apache.activemq.ActiveMQConnectionFactory">
                <property name="brokerURL">
                  <value>vm://localhost</value>
                </property>
                <property name="optimizeAcknowledge">
                  <value>false</value>
                </property>             
              </bean>
            </property>
          </bean>

          <bean id="simpleJmsTemplate" 
class="org.springframework.jms.core.JmsTemplate">
            <property name="connectionFactory">
                <ref local="jmsFactory" />
            </property>
          </bean>



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