An out-of-the-box installation of JBoss 5.0.0 Beta2 running with JDK 1.6 produces the following exception upon startup. Not sure the whys or wherefores but am pretty sure its not a good thing.

13:24:13,467 INFO [ServerImpl] Starting JBoss (Microcontainer)...
13:24:13,467 INFO [ServerImpl] Release ID: JBoss [Morpheus] 5.0.0.Beta2 (build: SVNTag=JBoss_5_0_0_Beta2 date=200704060017)
13:24:13,467 INFO [ServerImpl] Home Dir: C:\Program Files\jboss-5.0.0.Beta2
13:24:13,467 INFO [ServerImpl] Home URL: file:/C:/Program Files/jboss-5.0.0.Beta2/
13:24:13,467 INFO [ServerImpl] Library URL: file:/C:/Program Files/jboss-5.0.0.Beta2/lib/
13:24:13,467 INFO [ServerImpl] Patch URL: null
13:24:13,467 INFO [ServerImpl] Server Name: default
13:24:13,467 INFO [ServerImpl] Server Home Dir: C:\Program Files\jboss-5.0.0.Beta2\server\default
13:24:13,467 INFO [ServerImpl] Server Home URL: file:/C:/Program Files/jboss-5.0.0.Beta2/server/default/
13:24:13,467 INFO [ServerImpl] Server Data Dir: C:\Program Files\jboss-5.0.0.Beta2\server\default\data
13:24:13,467 INFO [ServerImpl] Server Temp Dir: C:\Program Files\jboss-5.0.0.Beta2\server\default\tmp
13:24:13,467 INFO [ServerImpl] Server Config URL: file:/C:/Program Files/jboss-5.0.0.Beta2/server/default/conf/
13:24:13,467 INFO [ServerImpl] Server Library URL: file:/C:/Program Files/jboss-5.0.0.Beta2/server/default/lib/
13:24:13,467 INFO [ServerImpl] Root Deployment Filename: jboss-service.xml
13:24:13,499 INFO [ServerImpl] Starting Microcontainer, bootstrapURL=file:/C:/Program Files/jboss-5.0.0.Beta2/server/default/conf/bootstrap-beans.xml
13:24:14,831 INFO [ProfileImpl] Using profile root:C:\Program Files\jboss-5.0.0.Beta2\server\default
13:24:15,913 ERROR [AbstractKernelController] Error installing to Instantiated: name=DeploymentFilter state=Described
java.lang.IllegalStateException: Class not found: [Ljava.lang.String;
at org.jboss.metadata.spi.signature.Signature.stringsToClasses(Signature.java:174)
at org.jboss.metadata.spi.signature.Signature.stringsToClasses(Signature.java:125)
at org.jboss.metadata.spi.signature.Signature.getParametersTypes(Signature.java:292)
at org.jboss.metadata.plugins.loader.reflection.AnnotatedElementMetaDataLoader.getComponentMetaDataRetrieval(AnnotatedElementMetaDataLoader.java:138)
at org.jboss.metadata.plugins.context.AbstractMetaDataContext.getComponentMetaDataRetrieval(AbstractMetaDataContext.java:280)
at org.jboss.metadata.spi.retrieval.MetaDataRetrievalToMetaDataBridge.getComponentMetaData(MetaDataRetrievalToMetaDataBridge.java:159)
at org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.methodHasAnnotations(AOPConstructorJoinpoint.java:202)
at org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.hasMethodMetaData(AOPConstructorJoinpoint.java:172)
at org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.hasInstanceOrJoinpointMetaData(AOPConstructorJoinpoint.java:152)
at org.jboss.aop.microcontainer.integration.AOPConstructorJoinpoint.dispatch(AOPConstructorJoinpoint.java:99)
at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchJoinPoint(KernelControllerContextAction.java:103)
at org.jboss.kernel.plugins.dependency.InstantiateAction.installActionInternal(InstantiateAction.java:52)
at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.installAction(KernelControllerContextAction.java:197)
at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.install(KernelControllerContextAction.java:136)
at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:233)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:724)
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:445)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:555)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:489)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:289)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:192)
at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deployBean(AbstractKernelDeployer.java:302)
at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deployBeans(AbstractKernelDeployer.java:272)
at org.jboss.kernel.plugins.deployment.AbstractKernelDeployer.deploy(AbstractKernelDeployer.java:119)
at org.jboss.kernel.plugins.deployment.BasicKernelDeployer.deploy(BasicKernelDeployer.java:64)
at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:76)
at org.jboss.kernel.plugins.deployment.xml.BasicXMLDeployer.deploy(BasicXMLDeployer.java:146)
at org.jboss.system.server.profileservice.ProfileServiceBootstrap.deploy(ProfileServiceBootstrap.java:295)
at org.jboss.system.server.profileservice.ProfileServiceBootstrap.bootstrap(ProfileServiceBootstrap.java:222)
at org.jboss.kernel.plugins.bootstrap.AbstractBootstrap.run(AbstractBootstrap.java:89)
at org.jboss.system.server.profileservice.ServerImpl.doStart(ServerImpl.java:403)
at org.jboss.system.server.profileservice.ServerImpl.start(ServerImpl.java:342)
at org.jboss.Main.boot(Main.java:210)
at org.jboss.Main$1.run(Main.java:522)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: [Ljava.lang.String;
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at org.jboss.metadata.spi.signature.Signature.stringsToClasses(Signature.java:170)
... 35 more
13:24:16,258 INFO [ServerInfo] Java version: 1.6.0,Sun Microsystems Inc.
13:24:16,258 INFO [ServerInfo] Java VM: Java HotSpot(TM) Client VM 1.6.0-b105,Sun Microsystems Inc.
13:24:16,258 INFO [ServerInfo] OS-System: Windows XP 5.1,x86
13:24:16,305 INFO [JMXKernel] Legacy JMX core initialized
Failed to boot JBoss:
java.lang.RuntimeException: Exception during Bootstrap
at org.jboss.kernel.plugins.bootstrap.AbstractBootstrap.run(AbstractBootstrap.java:99)
at org.jboss.system.server.profileservice.ServerImpl.doStart(ServerImpl.java:403)
at org.jboss.system.server.profileservice.ServerImpl.start(ServerImpl.java:342)
at org.jboss.Main.boot(Main.java:210)
at org.jboss.Main$1.run(Main.java:522)
at java.lang.Thread.run(Unknown Source)
Caused by: org.jboss.deployers.spi.IncompleteDeploymentException: Summary of incomplete deployments (SEE PREVIOUS ERRORS FOR DETAILS):

• • • CONTEXTS MISSING DEPENDENCIES: Name -> Dependency {Required State:Actual State}

VFSBootstrapScanner
-> DeploymentFilter

{Configured:**ERROR**}

VFSDeployerScanner
-> DeploymentFilter

{Configured:**ERROR**}

VFSDeploymentScanner
-> DeploymentFilter

{Configured:**ERROR**}

• • • CONTEXTS IN ERROR: Name -> Error

DeploymentFilter -> java.lang.ClassNotFoundException: [Ljava.lang.String;

at org.jboss.system.server.profileservice.ProfileServiceBootstrap.checkIncomplete(ProfileServiceBootstrap.java:389)
at org.jboss.system.server.profileservice.ProfileServiceBootstrap.bootstrap(ProfileServiceBootstrap.java:236)
at org.jboss.kernel.plugins.bootstrap.AbstractBootstrap.run(AbstractBootstrap.java:89)
... 5 more