Background threads?

Hi all

We're currently evaluating CR for use in our swing-based application. Our app has a plugin mechanism, and I'm having some difficulty in getting our plugins unloaded after using the ReportViewerBean. Specifically, it appears that a number of background threads with names like "Background Batch Spiller 0" are started up by the Crystal Reports code, and hang around even after closing the component. The threads appear to still have references to our plugin's classloader through the inheritedAccessControlContext field on the thread. We are not running with a SecurityManager.

I believe that I'm calling ReportClientDocument.close() as necessary and also cleaning up the viewer by calling stop() followed by destroy() on it.

Is there any way to programatically tell the Crystal code to shut down all its background threads? Or are there any other suggestions?

Thanks in advance

Tom