The seam examples under jboss-eap-4.2/seam/examples are broken. From what I can tell the descriptors have not changed from a previous release. The error message is:

11:20:27,496 INFO [EARDeployer] Init J2EE application: file:/tmp/sandbox/jboss/jboss-eap-4.3/jboss-as/server/production/deploy/jboss-seam-messages.ear
11:20:27,961 WARN [ServiceController] Problem creating service jboss.j2ee:service=EJB3,module=jboss-seam-messages.jar
java.lang.RuntimeException: Interceptor class not found: org.jboss.seam.ejb.SeamInterceptor
at org.jboss.ejb3.interceptor.InterceptorInfoRepository.loadClass(InterceptorInfoRepository.java:509)
at org.jboss.ejb3.interceptor.InterceptorInfoRepository.access$100(InterceptorInfoRepository.java:60)
at org.jboss.ejb3.interceptor.InterceptorInfoRepository$AnnotationInitialiser.<init>(InterceptorInfoRepository.java:666)
at org.jboss.ejb3.interceptor.InterceptorInfoRepository$XmlInitialiser.<init>(InterceptorInfoRepository.java:797)
at org.jboss.ejb3.interceptor.InterceptorInfoRepository.initialiseInfosFromXml(InterceptorInfoRepository.java:350)
at org.jboss.ejb3.interceptor.InterceptorInfoRepository.initialise(InterceptorInfoRepository.java:91)
at org.jboss.ejb3.Ejb3HandlerFactory$DDFactory.<init>(Ejb3HandlerFactory.java:48)
at org.jboss.ejb3.Ejb3HandlerFactory.getInstance(Ejb3HandlerFactory.java:83)
at org.jboss.ejb3.Ejb3Deployment.deploy(Ejb3Deployment.java:384)
at org.jboss.ejb3.Ejb3Deployment.create(Ejb3Deployment.java:328)
at org.jboss.ejb3.Ejb3Module.createService(Ejb3Module.java:74)
at org.jboss.system.ServiceMBeanSupport.jbossInternalCreate(ServiceMBeanSupport.java:260)
at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:243)
at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)