Bamboo doens't shut down cleanly on Tomcat, and can't be restarted thereafter

Jun 16, 2008 2:35:37 PM org.apache.coyote.http11.Http11BaseProtocol pause
INFO: Pausing Coyote HTTP/1.1 on http-8080
Jun 16, 2008 2:35:38 PM org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina
Jun 16, 2008 2:35:39 PM org.apache.coyote.http11.Http11BaseProtocol destroy
INFO: Stopping Coyote HTTP/1.1 on http-8080
Jun 16, 2008 2:35:39 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: Failed shutdown of Apache Portable Runtime
Exception in thread "Timer-0" java.lang.NullPointerException
        at com.mchange.v2.log.log4j.Log4jMLog$Log4jMLogger.isLoggable(Log4jMLog.java:257)
        at com.mchange.v2.resourcepool.BasicResourcePool$CullTask.run(BasicResourcePool.java:1934)
        at java.util.TimerThread.mainLoop(Timer.java:512)
        at java.util.TimerThread.run(Timer.java:462)
Exception in thread "QuartzScheduler_QuartzSchedulerThread" java.lang.NullPointerException
        at org.apache.catalina.loader.WebappClassLoader.findResources(WebappClassLoader.java:973)
        at java.lang.ClassLoader.getResources(ClassLoader.java:1070)
        at org.apache.commons.logging.LogFactory$4.run(LogFactory.java:1388)
        at java.security.AccessController.doPrivileged(Native Method)
        at org.apache.commons.logging.LogFactory.getResources(LogFactory.java:1407)
        at org.apache.commons.logging.LogFactory.getConfigurationFile(LogFactory.java:1469)
        at org.apache.commons.logging.LogFactory.getFactory(LogFactory.java:457)
        at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:685)
        at org.quartz.core.QuartzSchedulerThread.getLog(QuartzSchedulerThread.java:475)
        at org.quartz.core.QuartzSchedulerThread.run(QuartzSchedulerThread.java:404)
Jun 16, 2008 2:35:44 PM org.apache.activemq.broker.BrokerService stop
INFO: ActiveMQ Message Broker (bamboo, ID:tui.sydney.atlassian.com-51998-1213590890961-1:0) is shutting down
Failed to shut down: java.lang.NullPointerException