启动时抛的异常！

Question

用的JBOSS 5.0.1GA，第一次启动时抛下面的异常
11:07:44,781 ERROR [AbstractKernelController] Error installing to Start: name=jboss.j2ee:binding=message-driven-bean,jndiName=local/LogMessage@313068,plugin=invoker,service=EJB state=Create mode=Manual requiredState=Installed
org.jboss.deployment.DeploymentException: Unable to create activation spec ra=jboss.jca:service=RARDeployment,name='jms-ra.rar' messaging-type=javax.jms.MessageListener properties={}
at org.jboss.deployment.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:52)
at org.jboss.ejb.plugins.inflow.JBossMessageEndpointFactory.createActivationSpec(JBossMessageEndpointFactory.java:454)
at org.jboss.ejb.plugins.inflow.JBossMessageEndpointFactory.startService(JBossMessageEndpointFactory.java:198)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:376)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:322)
at sun.reflect.GeneratedMethodAccessor107.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:189)
at $Proxy36.start(Unknown Source)
at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42)
at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37)
at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:286)
...
         ...
         ...
         ...(此处省略)
有时候重启下上面的异常就没了，会抛下面这个异常
org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from URL [jndi:/localhost/cust/META-INF/dic-web.xml]; nested exception is java.lang.LinkageError: loader constraint violation: when resolving method "javax.xml.parsers.DocumentBuilder.setEntityResolver(Lorg/xml/sax/EntityResolver;)V" the class loader (instance of org/jboss/classloader/spi/base/BaseClassLoader) of the current class, org/springframework/beans/factory/xml/DefaultDocumentLoader, and the class loader (instance of <bootloader>) for resolved class, javax/xml/parsers/DocumentBuilder, have different Class objects for the type org/xml/sax/EntityResolver used in the signature