Exception from build agent

We recently bumped up the logging on our agents, also enabled email notification. Since then we've seen a number of exceptions like the one pasted below.


29.08.2009 09:50:26INFO  [] [cruisecontrol.builders.ScriptRunner] [INFO] [jar:jar]
29.08.2009 09:50:26ERROR [] [cruisecontrol.util.StreamPumper] Problem consuming line [[INFO] [jar:jar]]	
java.lang.RuntimeException: Error setting progress	at net.sourceforge.cruisecontrol.distributed.BuildAgentServiceImpl$3.setValue(BuildAgentServiceImpl.java:433)	at net.sourceforge.cruisecontrol.builders.Maven2Script.makeNewCurrentElement(Maven2Script.java:220)	at net.sourceforge.cruisecontrol.builders.Maven2Script.consumeLine(Maven2Script.java:193)	at net.sourceforge.cruisecontrol.util.CompositeConsumer.consumeLine(CompositeConsumer.java:67)	at net.sourceforge.cruisecontrol.util.StreamPumper.consumeLine(StreamPumper.java:141)	at net.sourceforge.cruisecontrol.util.StreamPumper.run(StreamPumper.java:128)	at java.lang.Thread.run(Thread.java:595)Caused by: java.rmi.NoSuchObjectException: no such object in table	at net.jini.jeri.BasicObjectEndpoint.executeCall(BasicObjectEndpoint.java:420)	at n
 et.jini.jeri.BasicInvocationHandler.invokeRemoteMethodOnce(BasicInvocationHandler.java:806)	at net.jini.jeri.BasicInvocationHandler.invokeRemoteMethod(BasicInvocationHandler.java:659)	at net.jini.jeri.BasicInvocationHandler.invoke(BasicInvocationHandler.java:528)	at $Proxy2.setValueRemote(Unknown Source)	at net.sourceforge.cruisecontrol.distributed.BuildAgentServiceImpl$3.setValue(BuildAgentServiceImpl.java:430)	... 6 more



------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with 
Crystal Reports now.  http://p.sf.net/sfu/bobj-july