Hi, 

> -----Original Message-----
> From: Rob Davies [mailto:[EMAIL PROTECTED] 
> Sent: Friday, January 18, 2008 8:28 AM
>
> It looks like you've hit flow control - you might want to disable it - 
> see here: http://activemq.apache.org/producer-flow-control.html

Yes, that seems to be a part of the problem.
I have added this to my activemq.xml:

          <policyEntry queue=">" producerFlowControl="false">
            <dispatchPolicy>
                  <simpleDispatchPolicy/>
            </dispatchPolicy>
          </policyEntry>

It seems that it does not freeze anymore, but after a some time,
delivery of messages to the processors becomes much slower and 
messages start to pile up in the queues.

Looks like I have to do some more investigation ...

Cheers,
Jürgen

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