This is a RESEND because of mail server issues.  Not sure if the original message went out.

I saw a similar thread about this back in March but I am now seeing a similar exception being thrown.  I am running 5.0.1.  The error is thrown in my app after the change set listener determines there was a change with the rules package in the Guvnor.   I have included the stack trace from the most recent time the exception was thrown.  Hopefully someone can provide some additional information or a workaround.  Has this problem been fixed in 5.1?  If so, has 5.1 moved out of M2 state and into a CR state and when will it go into a full released state?

Exception in thread "Thread-44" java.lang.OutOfMemoryError: GC overhead limit exceeded

       at org.drools.rule.GroupElement.<init>(GroupElement.java:44)

       at org.drools.rule.GroupElement.<init>(GroupElement.java:47)

       at sun.reflect.GeneratedConstructorAccessor61.newInstance(Unknown Source)

       at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

       at java.lang.reflect.Constructor.newInstance(Constructor.java:513)

       at java.lang.Class.newInstance0(Class.java:355)

       at java.lang.Class.newInstance(Class.java:308)

       at org.drools.rule.GroupElement.clone(GroupElement.java:267)

       at org.drools.rule.GroupElement.clone(GroupElement.java:279)

       at org.drools.rule.Rule.getExtendedLhs(Rule.java:518)

       at org.drools.rule.Rule.getTransformedLhs(Rule.java:545)

       at org.drools.reteoo.builder.ReteooRuleBuilder.addRule(ReteooRuleBuilder.java:98)

       at org.drools.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:117)

       at org.drools.reteoo.ReteooRuleBase.addRule(ReteooRuleBase.java:362)

       at org.drools.common.AbstractRuleBase.addRule(AbstractRuleBase.java:618)

       at org.drools.common.AbstractRuleBase.addPackages(AbstractRuleBase.java:500)

       at org.drools.reteoo.ReteooRuleBase.addPackage(ReteooRuleBase.java:388)

       at org.drools.agent.impl.KnowledgeAgentImpl.rebuildResources(KnowledgeAgentImpl.java:416)

       at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:120)

       at org.drools.agent.impl.KnowledgeAgentImpl$ChangeSetNotificationDetector.run(KnowledgeAgentImpl.java:538)

       at java.lang.Thread.run(Thread.java:619)

Thanks.