Having the same problem here...
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service jbossas start
Starting jbossas: [FAILED]
Process crashed on startup
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server.log is empty
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BOOT.LOG
10:15:11,111 INFO [ServerImpl] Starting JBoss (Microcontainer)...
10:15:11,111 INFO [ServerImpl] Release ID: JBoss [EAP] 5.1.2 (build: SVNTag=JBPAPP_5_1_2 date=201206071031)
10:15:11,112 DEBUG [ServerImpl] Using config: org.jboss.bootstrap.BaseServerConfig@4e99353f
10:15:11,112 DEBUG [ServerImpl] Server type: class org.jboss.bootstrap.microcontainer.ServerImpl
10:15:11,112 DEBUG [ServerImpl] Server loaded through: org.jboss.bootstrap.NoAnnotationURLClassLoader
10:15:11,112 INFO [ServerImpl] Bootstrap URL: null
10:15:11,112 INFO [ServerImpl] Home Dir: /var/lib/jbossas
10:15:11,112 INFO [ServerImpl] Home URL: file:/var/lib/jbossas/
10:15:11,112 INFO [ServerImpl] Library URL: file:/var/lib/jbossas/lib/
10:15:11,112 INFO [ServerImpl] Patch URL: null
10:15:11,112 INFO [ServerImpl] Common Base URL: file:/var/lib/jbossas/common/
10:15:11,112 INFO [ServerImpl] Common Library URL: file:/var/lib/jbossas/common/lib/
10:15:11,112 INFO [ServerImpl] Server Name: default
10:15:11,113 INFO [ServerImpl] Server Base Dir: /var/lib/jbossas/server
10:15:11,113 INFO [ServerImpl] Server Base URL: file:/var/lib/jbossas/server/
10:15:11,113 INFO [ServerImpl] Server Config URL: file:/var/lib/jbossas/server/default/conf/
10:15:11,113 INFO [ServerImpl] Server Home Dir: /var/lib/jbossas/server/default
10:15:11,113 INFO [ServerImpl] Server Home URL: file:/var/lib/jbossas/server/default/
10:15:11,113 INFO [ServerImpl] Server Data Dir: /var/lib/jbossas/server/default/data
10:15:11,113 INFO [ServerImpl] Server Library URL: file:/var/lib/jbossas/server/default/lib/
10:15:11,113 INFO [ServerImpl] Server Log Dir: /var/lib/jbossas/server/default/log
10:15:11,113 INFO [ServerImpl] Server Native Dir: /var/lib/jbossas/server/default/tmp/native
10:15:11,113 INFO [ServerImpl] Server Temp Dir: /var/lib/jbossas/server/default/tmp
10:15:11,113 INFO [ServerImpl] Server Temp Deploy Dir: /var/lib/jbossas/server/default/tmp/deploy
10:15:11,116 DEBUG [ServerImpl] Shutdown hook added Thread[JBoss Shutdown Hook,5,jboss]
10:15:11,141 DEBUG [KernelFactory] Starting JBoss Kernel construction...
10:15:11,285 DEBUG [KernelFactory] Completed JBoss Kernel construction. Duration: 144 milliseconds
10:15:11,664 DEBUG [ServerImpl] Already in start, ignoring duplicate start
10:15:11,665 INFO [ServerImpl] Starting Microcontainer, bootstrapURL=file:/var/lib/jbossas/server/default/conf/bootstrap.xml
10:15:11,666 DEBUG [ServerImpl] Failed to start
java.lang.NoClassDefFoundError: org/jboss/xb/binding/sunday/unmarshalling/SchemaBinding
at org.jboss.bootstrap.microcontainer.ServerImpl.doStart(ServerImpl.java:123)
at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:450)
at org.jboss.Main.boot(Main.java:221)
at org.jboss.Main$1.run(Main.java:556)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassNotFoundException: org.jboss.xb.binding.sunday.unmarshalling.SchemaBinding
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 5 more
10:15:11,668 INFO [ServerImpl] Runtime shutdown hook called, forceHalt: true
10:15:11,683 INFO [ServerImpl] Shutdown complete
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CONSOLE.LOG
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JBoss Bootstrap Environment
JBOSS_HOME: /usr/share/jbossas/
JAVA: /usr/lib/jvm/java/bin/java
JAVA_OPTS: -Dprogram.name=run.sh -server -Xms1303m -Xmx3000m -XX:MaxPermSize=256m -Dorg.jboss.resolver.warning=true -Dsun.rmi.dgc.client.gcInterval=600000 -Dsun.rmi.dgc.server.gcInterval=600000 -Dsun.lang.ClassLoader.allowArraySyntax=true -XX:+HeapDumpOnOutOfMemoryError -Djboss.partition.udpGroup=228.1.2.3 -Djboss.webpartition.mcast_port=45577 -Djboss.hapartition.mcast_port=45566 -Djboss.ejb3entitypartition.mcast_port=43333 -Djboss.ejb3sfsbpartition.mcast_port=45551 -Djava.awt.headless=true -Djava.net.preferIPv4Stack=true
CLASSPATH: /usr/share/jbossas//bin/run.jar:/usr/lib/jvm/java/lib/tools.jar
=========================================================================
10:15:11,111 INFO [ServerImpl] Starting JBoss (Microcontainer)...
10:15:11,111 INFO [ServerImpl] Release ID: JBoss [EAP] 5.1.2 (build: SVNTag=JBPAPP_5_1_2 date=201206071031)
10:15:11,112 INFO [ServerImpl] Bootstrap URL: null
10:15:11,112 INFO [ServerImpl] Home Dir: /var/lib/jbossas
10:15:11,112 INFO [ServerImpl] Home URL: file:/var/lib/jbossas/
10:15:11,112 INFO [ServerImpl] Library URL: file:/var/lib/jbossas/lib/
10:15:11,112 INFO [ServerImpl] Patch URL: null
10:15:11,112 INFO [ServerImpl] Common Base URL: file:/var/lib/jbossas/common/
10:15:11,112 INFO [ServerImpl] Common Library URL: file:/var/lib/jbossas/common/lib/
10:15:11,112 INFO [ServerImpl] Server Name: default
10:15:11,113 INFO [ServerImpl] Server Base Dir: /var/lib/jbossas/server
10:15:11,113 INFO [ServerImpl] Server Base URL: file:/var/lib/jbossas/server/
10:15:11,113 INFO [ServerImpl] Server Config URL: file:/var/lib/jbossas/server/default/conf/
10:15:11,113 INFO [ServerImpl] Server Home Dir: /var/lib/jbossas/server/default
10:15:11,113 INFO [ServerImpl] Server Home URL: file:/var/lib/jbossas/server/default/
10:15:11,113 INFO [ServerImpl] Server Data Dir: /var/lib/jbossas/server/default/data
10:15:11,113 INFO [ServerImpl] Server Library URL: file:/var/lib/jbossas/server/default/lib/
10:15:11,113 INFO [ServerImpl] Server Log Dir: /var/lib/jbossas/server/default/log
10:15:11,113 INFO [ServerImpl] Server Native Dir: /var/lib/jbossas/server/default/tmp/native
10:15:11,113 INFO [ServerImpl] Server Temp Dir: /var/lib/jbossas/server/default/tmp
10:15:11,113 INFO [ServerImpl] Server Temp Deploy Dir: /var/lib/jbossas/server/default/tmp/deploy
10:15:11,665 INFO [ServerImpl] Starting Microcontainer, bootstrapURL=file:/var/lib/jbossas/server/default/conf/bootstrap.xml
Exception in thread "main" java.lang.NoClassDefFoundError: org/jboss/xb/binding/sunday/unmarshalling/SchemaBinding
at org.jboss.bootstrap.microcontainer.ServerImpl.doStart(ServerImpl.java:123)
at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:450)
at org.jboss.Main.boot(Main.java:221)
at org.jboss.Main$1.run(Main.java:556)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassNotFoundException: org.jboss.xb.binding.sunday.unmarshalling.SchemaBinding
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 5 more
10:15:11,668 INFO [ServerImpl] Runtime shutdown hook called, forceHalt: true
10:15:11,683 INFO [ServerImpl] Shutdown complete
Shutdown complete
Halting VM