After I inventorize a tomcat 7 [bundled with EWS 2.0.0.CR1] instance and set up remote JMX connection to it,  its (HTTP|AJP) connectors appear unavailable. This message appears in the agent's log repeatedly over time:

012-10-11 10:44:27,262 DEBUG [InventoryManager.availability-1] (rhq.core.pc.inventory.AvailabilityExecutor)- Failed to collect availability on Resource[id=10196, uuid=e16d494d-5c81-43fa-9d49-403aef675fc2, type={Tomcat}Tomcat Connector, key=Catalina:port=8009,type=Connector, name=?-8009, parent=Tomcat (8080)]
org.rhq.core.pluginapi.inventory.InvalidPluginConfigurationException: Failed to start component for resource Resource[id=10196, uuid=e16d494d-5c81-43fa-9d49-403aef675fc2, type={Tomcat}Tomcat Connector, key=Catalina:port=8009,type=Connector, name=?-8009, parent=Tomcat (8080)].
	at org.rhq.core.pc.inventory.InventoryManager.activateResource(InventoryManager.java:1749)
	at org.rhq.core.pc.inventory.AvailabilityExecutor.checkInventory(AvailabilityExecutor.java:298)
	at org.rhq.core.pc.inventory.AvailabilityExecutor.checkInventory(AvailabilityExecutor.java:353)
	at org.rhq.core.pc.inventory.AvailabilityExecutor.checkInventory(AvailabilityExecutor.java:353)
	at org.rhq.core.pc.inventory.AvailabilityExecutor.call(AvailabilityExecutor.java:149)
	at org.rhq.core.pc.inventory.AvailabilityExecutor.run(AvailabilityExecutor.java:98)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:351)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:178)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:165)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:267)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:679)
Caused by: org.rhq.core.pluginapi.inventory.InvalidPluginConfigurationException: The connector is not listening for requests on the configured port. This is most likely due to the configured port being in use at Tomcat startup. In some cases (AJP connectors) Tomcat will assign an open port. This happens most often when there are multiple Tomcat servers running on the same platform. Check your Tomcat configuration for conflicts: Catalina:port=8009,type=Connector
	at org.jboss.on.plugins.tomcat.TomcatConnectorComponent.start(TomcatConnectorComponent.java:113)
	at sun.reflect.GeneratedMethodAccessor34.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:634)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	... 3 more

.. but the connector is in reality fully working and listening on that port. Also I noticed that JON detects the connector's "handler" attribute as "?" - that is quite likely connected to this issue somehow. The ObjectName of the connector, eg. Catalina:type=Connector,port=8080, is detected correctly.

Also, if I for example try to invoke the 'stop' operation on the connector, I get this error in agent's log:

2012-10-11 10:54:40,413 DEBUG [OperationManager.invoker-1] (rhq.core.pc.inventory.ResourceContainer$ResourceComponentInvocationHandler)- Call to [org.jboss.on.plugins.tomcat.TomcatConnectorComponent.invokeOperation()] with args [[stop, Configuration[id=0]]] failed.
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:262)
	at java.util.concurrent.FutureTask.get(FutureTask.java:119)
	at org.rhq.core.pc.inventory.ResourceContainer$ResourceComponentInvocationHandler.invokeInNewThreadWithLock(ResourceContainer.java:554)
	at org.rhq.core.pc.inventory.ResourceContainer$ResourceComponentInvocationHandler.invoke(ResourceContainer.java:542)
	at $Proxy63.invokeOperation(Unknown Source)
	at org.rhq.core.pc.operation.OperationInvocation.run(OperationInvocation.java:217)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
	at java.lang.Thread.run(Thread.java:679)
Caused by: java.lang.NullPointerException
	at org.rhq.plugins.jmx.MBeanResourceComponent.loadBean(MBeanResourceComponent.java:175)
	at org.rhq.plugins.jmx.MBeanResourceComponent.getEmsBean(MBeanResourceComponent.java:137)
	at org.rhq.plugins.jmx.MBeanResourceComponent.invokeOperation(MBeanResourceComponent.java:524)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:616)
	at org.rhq.core.pc.inventory.ResourceContainer$ComponentInvocationThread.call(ResourceContainer.java:634)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	... 3 more