I found this java exception in the log which is causing the connection.start
to block.
anyone know the solution for this?

2010-04-26 13:47:02,024 INFO  [main] rawloggers.Log4jMessageLogger
(Log4jMessageLogger.java:54) - MESSAGE [Broker] BRK-1002 : Starting :
Listening on TCP port 5672
2010-04-26 13:47:02,024 INFO  [main] server.Main (Main.java:453) - Qpid
Broker Ready :0.6 build: 917988
2010-04-26 13:47:02,024 INFO  [main] rawloggers.Log4jMessageLogger
(Log4jMessageLogger.java:54) - MESSAGE [Broker] BRK-1004 : Ready
2010-04-26 13:47:08,086 ERROR [AnonymousIoService-3] mina.MINANetworkDriver
(MINANetworkDriver.java:301) - Exception thrown and no ProtocolEngine to
handle it
java.lang.NullPointerException
        at 
java.util.concurrent.ConcurrentHashMap.get(ConcurrentHashMap.java:768)
        at
org.apache.qpid.server.virtualhost.VirtualHostRegistry.getVirtualHost(VirtualHostRegistry.java:60)
        at
org.apache.qpid.server.transport.ServerConnectionDelegate.connectionOpen(ServerConnectionDelegate.java:103)
        at
org.apache.qpid.server.transport.ServerConnectionDelegate.connectionOpen(ServerConnectionDelegate.java:33)
        at
org.apache.qpid.transport.ConnectionOpen.dispatch(ConnectionOpen.java:96)
        at
org.apache.qpid.transport.ConnectionDelegate.control(ConnectionDelegate.java:49)
        at
org.apache.qpid.transport.ConnectionDelegate.control(ConnectionDelegate.java:40)
        at org.apache.qpid.transport.Method.delegate(Method.java:163)
        at org.apache.qpid.transport.Connection.received(Connection.java:286)
        at org.apache.qpid.transport.Connection.received(Connection.java:52)
        at org.apache.qpid.transport.network.Assembler.emit(Assembler.java:98)
        at 
org.apache.qpid.transport.network.Assembler.assemble(Assembler.java:184)
        at org.apache.qpid.transport.network.Assembler.frame(Assembler.java:132)
        at org.apache.qpid.transport.network.Frame.delegate(Frame.java:133)
        at 
org.apache.qpid.transport.network.Assembler.received(Assembler.java:103)
        at 
org.apache.qpid.transport.network.Assembler.received(Assembler.java:48)
        at
org.apache.qpid.transport.network.InputHandler.next(InputHandler.java:187)
        at
org.apache.qpid.transport.network.InputHandler.received(InputHandler.java:103)
        at
org.apache.qpid.transport.network.InputHandler.received(InputHandler.java:42)
        at
org.apache.qpid.server.protocol.MultiVersionProtocolEngine.received(MultiVersionProtocolEngine.java:101)
        at
org.apache.qpid.server.protocol.MultiVersionProtocolEngine.received(MultiVersionProtocolEngine.java:36)
        at
org.apache.qpid.transport.network.mina.MINANetworkDriver.messageReceived(MINANetworkDriver.java:323)
        at
org.apache.mina.common.support.AbstractIoFilterChain$TailFilter.messageReceived(AbstractIoFilterChain.java:703)
        at
org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(AbstractIoFilterChain.java:362)
        at
org.apache.mina.common.support.AbstractIoFilterChain.access$1200(AbstractIoFilterChain.java:54)
        at
org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceived(AbstractIoFilterChain.java:800)
        at
org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java:243)
        at
org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(ExecutorFilter.java:305)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:665)
        at
edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:690)
        at java.lang.Thread.run(Thread.java:619)

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