请教各位大侠，JBoss-3.0.8启动出错

java.rmi.ServerException: Could not bind JRMP invoker; nested exception is:
java.rmi.server.ExportException: Port already in use: 4444; nested exception is:
java.net.BindException: Address in use: JVM_Bind
java.rmi.server.ExportException: Port already in use: 4444; nested exception is:
java.net.BindException: Address in use: JVM_Bind
java.net.BindException: Address in use: JVM_Bind
at java.net.PlainSocketImpl.socketBind(Native Method)
at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:447)
at java.net.ServerSocket.<init>(ServerSocket.java:165)
at java.net.ServerSocket.<init>(ServerSocket.java:77)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createServerSocket(RMIDirectSocketFactory.java:25)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createServerSocket(RMIMasterSocketFactory.java:307)
at sun.rmi.transport.tcp.TCPEndpoint.newServerSocket(TCPEndpoint.java:554)
at sun.rmi.transport.tcp.TCPTransport.listen(TCPTransport.java:217)
at sun.rmi.transport.tcp.TCPTransport.exportObject(TCPTransport.java:171)
at sun.rmi.transport.tcp.TCPEndpoint.exportObject(TCPEndpoint.java:314)
at sun.rmi.transport.LiveRef.exportObject(LiveRef.java:114)
at sun.rmi.server.UnicastServerRef.exportObject(UnicastServerRef.java:120)
at sun.rmi.server.UnicastServerRef.exportObject(UnicastServerRef.java:104)
at java.rmi.server.UnicastRemoteObject.exportObject(UnicastRemoteObject.java:273)
at java.rmi.server.UnicastRemoteObject.exportObject(UnicastRemoteObject.java:204)
at org.jboss.invocation.jrmp.server.JRMPInvoker.exportCI(JRMPInvoker.java:423)
at org.jboss.invocation.jrmp.server.JRMPInvoker.start(JRMPInvoker.java:263)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:517)
at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:1003)
at $Proxy0.start(Unknown Source)
at org.jboss.system.ServiceController.start(ServiceController.java:413)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:517)
at org.jboss.util.jmx.MBeanProxy.invoke(MBeanProxy.java:174)
at $Proxy2.start(Unknown Source)
at org.jboss.deployment.SARDeployer.start(SARDeployer.java:232)
at org.jboss.deployment.MainDeployer.start(MainDeployer.java:814)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:627)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:591)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:575)
at java.lang.reflect.Method.invoke(Native Method)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBeanDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:517)
at org.jboss.system.server.ServerImpl.doStart(ServerImpl.java:324)
at org.jboss.system.server.ServerImpl.start(ServerImpl.java:221)
at org.jboss.Main.boot(Main.java:148)
at org.jboss.Main$1.run(Main.java:381)
at java.lang.Thread.run(Thread.java:479)