Notice that upgrading to JDK 6 is not an option.I suspect that you are going to have a serious problem going forward.
SIGBUS (0xa)Typically that type of event represents an environment problem and not a VM problem. So some cause besides the java application, for example it is possible some part of the hardware is failing. Or some other installed application or system feature is causing a problem. Naturally any new updates would be suspect.
Any help would be really appreciated.One thing about Oracle if you give them enough money they are willing to do most anything. Of course the question becomes what is 'enough'.