Writing heap dump - java - third party classes

I’m getting this now occasionally with JIMI third party classes on Linux Redhat with 6.5.4 which to date has been wonderfully stable. Relates to

http://www-10.lotus.com/ldd/nd6forum.nsf/55c38d716d632d9b8525689b005ba1c0/c04814711b485a10852570d9005ab775?OpenDocument

Is anyone any forrader on how to properly solve it? I too thini think that increasing the event pool size is not the answer, merely a delaying tactic.