2008-02-12 05:13:45,896 ERROR [DefaultUDPTransportMapping_89.250.115.68/0] SnmpWalker: SnmpCollectors for 89.250.115.79: Unexpected Error occurred processing SnmpCollectors for 89.250.115.79 for 89.250.115.79/89.250.115.79
java.util.ConcurrentModificationException
        at java.util.Hashtable$Enumerator.next(Hashtable.java:1031)
        at org.snmp4j.Snmp.close(Unknown Source)
        at org.opennms.netmgt.snmp.snmp4j.Snmp4JWalker.close(Snmp4JWalker.java:223)
        at org.opennms.netmgt.snmp.SnmpWalker.finish(SnmpWalker.java:149)
        at org.opennms.netmgt.snmp.SnmpWalker.handleDone(SnmpWalker.java:122)
        at org.opennms.netmgt.snmp.SnmpWalker.buildAndSendNextPdu(SnmpWalker.java:95)
        at org.opennms.netmgt.snmp.snmp4j.Snmp4JWalker.access$500(Snmp4JWalker.java:58)
        at org.opennms.netmgt.snmp.snmp4j.Snmp4JWalker$Snmp4JResponseListener.processResponse(Snmp4JWalker.java:146)
        at org.opennms.netmgt.snmp.snmp4j.Snmp4JWalker$Snmp4JResponseListener.onResponse(Snmp4JWalker.java:167)
        at org.snmp4j.Snmp.processPdu(Unknown Source)
        at org.snmp4j.MessageDispatcherImpl.fireProcessPdu(Unknown Source)
        at org.snmp4j.MessageDispatcherImpl.dispatchMessage(Unknown Source)
        at org.snmp4j.MessageDispatcherImpl.processMessage(Unknown Source)
        at org.snmp4j.MessageDispatcherImpl.processMessage(Unknown Source)
        at org.snmp4j.transport.AbstractTransportMapping.fireProcessMessage(Unknown Source)
        at org.snmp4j.transport.DefaultUdpTransportMapping$ListenThread.run(Unknown Source)