Today I got this when doing a request during Tomcat startup. Can it be a racing condition?

Greetings,

Ronald.

INFO: Starting Coyote HTTP/1.1 on port 8080
May 25, 2004 1:37:14 PM org.apache.coyote.tomcat5.CoyoteAdapter service
SEVERE: An exception or error occurred in the container during the request processing
java.lang.NullPointerException
       at org.apache.catalina.realm.RealmBase.findSecurityConstraints (RealmBase.java:475)
       at org.apache.catalina.authenticator.AuthenticatorBase.invoke (AuthenticatorBase.java:502)
       at org.apache.catalina.core.StandardValveContext.invokeNext (StandardValveContext.java:149)
       at org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.java:567)
       at org.apache.catalina.core.StandardHostValve.invoke (StandardHostValve.java:184)
       at org.apache.catalina.core.StandardValveContext.invokeNext (StandardValveContext.java:151)
       at org.apache.catalina.cluster.tcp.ReplicationValve.invoke (ReplicationValve.java:182)
       at org.apache.catalina.core.StandardValveContext.invokeNext (StandardValveContext.java:149)
       at org.apache.catalina.valves.ErrorReportValve.invoke (ErrorReportValve.java:164)
       at org.apache.catalina.core.StandardValveContext.invokeNext (StandardValveContext.java:149)
       at org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.java:567)
       at org.apache.catalina.core.StandardEngineValve.invoke (StandardEngineValve.java:156)
       at org.apache.catalina.core.StandardValveContext.invokeNext (StandardValveContext.java:151)
       at org.apache.catalina.core.StandardPipeline.invoke (StandardPipeline.java:567)
       at org.apache.catalina.core.ContainerBase.invoke (ContainerBase.java:972)
       at org.apache.coyote.tomcat5.CoyoteAdapter.service (CoyoteAdapter.java:206)
       at org.apache.coyote.http11.Http11Processor.process (Http11Processor.java:833)
       at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:732)
       at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:619)
       at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:688)
       at java.lang.Thread.run (Thread.java:534)
May 25, 2004 1:37:15 PM org.apache.jk.common.ChannelSocket init
INFO: JK2: ajp13 listening on /0.0.0.0:8009