Sorry to be misleading - no, jbpm doesn't use quartz, and I understand that. But in reading this forum, I've seen multiple people that have suggested quartz for scheduling purposes in conjunction with jbpm.
That said, we followed that advice and have the stated problem. I've posted to some quartz forums, but there is no movement on those forums, so I figured I'd try the jbpm forum to see if others have had similar issues - OR - to see if other have different scheduling suggestions?