We are facing following deployment error on some occations, restarting the server happens to resovle the issue.

08:53:40,593 WARN [MainDeployer] The manifest entry in file:/home/nightbld/jboss_trunk_Oracle9i/jboss/jboss_3_x/server/si/dep
loy/jboss-net.sar/commons-logging.jar references URL file:/home/nightbld/jboss_trunk_Oracle9i/jboss/jboss_3_x/server/si/deploy
/jboss-net.sar/log4j.jar which could not be opened, entry ignored
08:53:40,594 WARN [MainDeployer] The manifest entry in file:/home/nightbld/jboss_trunk_Oracle9i/jboss/jboss_3_x/server/si/dep
loy/jboss-net.sar/commons-logging.jar references URL file:/home/nightbld/jboss_trunk_Oracle9i/jboss/jboss_3_x/server/si/deploy
/jboss-net.sar/log4j-core.jar which could not be opened, entry ignored
08:53:41,088 INFO [MainDeployer] deployment waiting for deployer: file:/home/nightbld/jboss_trunk_Oracle9i/jboss/jboss_3_x/se
rver/si/deploy/jboss-net.sar/jmx-net.wsr/
08:53:41,193 WARN [NestedThrowable] Duplicate throwable nesting of same base type: class org.jboss.deployment.DeploymentExcep
tion is assignable from: class org.jboss.deployment.DeploymentException
08:53:41,193 ERROR [MainDeployer] could not create deployment: file:/home/nightbld/jboss_trunk_Oracle9i/jboss/jboss_3_x/server
/si/deploy/jboss-net.sar/
org.jboss.deployment.DeploymentException: create operation failed for package file:/home/nightbld/jboss_trunk_Oracle9i/jboss/j
boss_3_x/server/si/deploy/jboss-net.sar/; - nested throwable: (org.jboss.deployment.DeploymentException: org.jboss.net.axis.se
rver.AxisService constructor has thrown an error: java.lang.IllegalAccessError: try to access class org.jboss.net.DefaultResou
rceBundle$EmptyEnumeration from class org.jboss.net.DefaultResourceBundle; - nested throwable: (RuntimeErrorException: org.jbo
ss.net.axis.server.AxisService constructor has thrown an error: java.lang.IllegalAccessError: try to access class org.jboss.ne
t.DefaultResourceBundle$EmptyEnumeration from class org.jboss.net.DefaultResourceBundle
Cause: java.lang.IllegalAccessError: try to access class org.jboss.net.DefaultResourceBundle$EmptyEnumeration from class org.j
boss.net.DefaultResourceBundle))
at org.jboss.deployment.SARDeployer.create(SARDeployer.java:202)
at org.jboss.deployment.MainDeployer.create(MainDeployer.java:784)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:639)
at org.jboss.deployment.MainDeployer.deploy(MainDeployer.java:613)
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:549)
at org.jboss.mx.util.MBeanProxyExt.invoke(MBeanProxyExt.java:177)
at $Proxy7.deploy(Unknown Source)
at org.jboss.deployment.scanner.URLDeploymentScanner.deploy(URLDeploymentScanner.java:302)
at org.jboss.deployment.scanner.URLDeploymentScanner.scan(URLDeploymentScanner.java:476)
at org.jboss.deployment.scanner.AbstractDeploymentScanner$ScannerThread.doScan(AbstractDeploymentScanner.java:200)
at org.jboss.deployment.scanner.AbstractDeploymentScanner.startService(AbstractDeploymentScanner.java:273)
at org.jboss.system.ServiceMBeanSupport.start(ServiceMBeanSupport.java:192)
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:549)
at org.jboss.system.ServiceController$ServiceProxy.invoke(ServiceController.java:966)
at $Proxy0.start(Unknown Source)
at org.jboss.system.ServiceController.start(ServiceController.java:392)
at java.lang.reflect.Method.invoke(Native Method)