10.5.2 MQ agent is not reporting the "Errors", "Message Statistics" and "Performance" nodes under "Message Flows" as the 10.0 agent did.
In Certain environment MQ agent is facing the problem because of the j2ee.jar in use. It seems that the j2ee.jar that the environment has, lacks JMSException.class. And as javax.jms-api-2.0.jar contains JMSException.class, the problem got resolved by adding this jar in the classpath.
Modify the startMQMonitor.sh and add jar(javax.jms-api-2.0.jar) in the classpath.