Several times JBoss 7.1.1.Final is hanging during startup on Linux machines due to a deadlock in the JDK while parsing annotations:

"MSC service thread 1-8":
at java.lang.Class.initAnnotationsIfNecessary(Class.java:3067)

• waiting to lock <0x00000000a40752c0> (a java.lang.Class for javax.enterprise.context.Dependent)
  at java.lang.Class.getAnnotation(Class.java:3029)
  at sun.reflect.annotation.AnnotationType.<init>(AnnotationType.java:113)
  at sun.reflect.annotation.AnnotationType.getInstance(AnnotationType.java:66)
• locked <0x00000000a23a16f8> (a java.lang.Class for sun.reflect.annotation.AnnotationType)
  at sun.reflect.annotation.AnnotationParser.parseAnnotation(AnnotationParser.java:202)
  at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:69)
  at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:52)
  at java.lang.Class.initAnnotationsIfNecessary(Class.java:3070)
• locked <0x00000000a4540cd0> (a java.lang.Class for com.asml.lcp.middleware.common.core.jms.TextMessageSender)
  at java.lang.Class.getAnnotations(Class.java:3050)
  at org.jboss.weld.introspector.jlr.WeldClassImpl.of(WeldClassImpl.java:118)
  at org.jboss.weld.resources.ClassTransformer$TransformTypeToWeldClass.apply(ClassTransformer.java:49)
  at org.jboss.weld.resources.ClassTransformer$TransformTypeToWeldClass.apply(ClassTransformer.java:40)
  ...
  "MSC service thread 1-1":
  at sun.reflect.annotation.AnnotationType.getInstance(AnnotationType.java:63)
• waiting to lock <0x00000000a23a16f8> (a java.lang.Class for sun.reflect.annotation.AnnotationType)
  at sun.reflect.annotation.AnnotationParser.parseAnnotation(AnnotationParser.java:202)
  at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:69)
  at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:52)
  at java.lang.Class.initAnnotationsIfNecessary(Class.java:3070)
• locked <0x00000000a40752c0> (a java.lang.Class for javax.enterprise.context.Dependent)
  at java.lang.Class.getAnnotations(Class.java:3050)
  at org.jboss.weld.introspector.jlr.WeldAnnotationImpl.of(WeldAnnotationImpl.java:56)
  at org.jboss.weld.resources.ClassTransformer$TransformClassToWeldAnnotation.apply(ClassTransformer.java:63)
  at org.jboss.weld.resources.ClassTransformer$TransformClassToWeldAnnotation.apply(ClassTransformer.java:54)
  ...

The problem itself is located in the JDK but it seems that Oracle decided to ignore it... (see ticket references in WELD-1169).