BIRT reports hangup on multi threaded application

Hi

We have a application running on JBOSS7.1.1Final integrated with BIRT3.7.2. We have a JMS listener that has 8 maxConcurrentConsumers.

Our BIRT reports executed within a JBOSS applilcation via JMS listerners, springframe work listeners.
We are experience some race-conditions within BIRT (we believe).

We were wondering what is the Best-Practise for creating a Platform/ReportEngine instance in many reporting JMS-threads? Should we create a unique Platfrom/ReportEngine instance for each Thread? Should we have all threads share the same Platform instance?

The result of IReportEngineFactory is a thread safe?

I appreciate for your help

Thanks
Hari