Just ran into something a bit far fetched: My Jasper reports were not working in VOS, our JAVA Swing application at Inforviegas. It complained with an error along these lines: Exception in thread "AWT-EventQueue-0"...

If you are developing in Swing and using hibernate you might - at some point in time - run into this exception: org.hibernate.NonUniqueObjectException: a different object with the same identifier value was already associated with the session

What...