Hello, I think I won't be able to provide such an app, since it occurs very randomly (or so it seems) in my very app... Anyway, here's something I never noticed before... after one of those crashes, I killed (ctrl+c on Windows) my JBoss AS and got this server-side error: 14:56:23,946 ERROR [STDERR] Exception in thread "Thread-0" (Thread-0) 14:56:23,950 ERROR [STDERR] java.lang.NullPointerException (Thread-0) 14:56:23,958 ERROR [STDERR] at org.jboss.mx.loading.RepositoryClassLoader.findClass(RepositoryClassLoader.java:630) (Thread-0) 14:56:23,963 ERROR [STDERR] at java.lang.ClassLoader.loadClass(ClassLoader.java:306) (Thread-0) 14:56:23,967 ERROR [STDERR] at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:4 74) (Thread-0) 14:56:23,974 ERROR [STDERR] at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:415) (Thread-0) 14:56:23,984 ERROR [STDERR] at java.lang.ClassLoader.loadClass(ClassLoader.java:251) (Thread-0) 14:56:23,988 ERROR [STDERR] at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) (Thread-0) 14:56:23,990 ERROR [STDERR] at java.lang.Class.forName0(Native Method) (Thread-0) 14:56:23,993 ERROR [STDERR] at java.lang.Class.forName(Class.java:242) (Thread-0) 14:56:23,998 ERROR [STDERR] at sun.reflect.generics.factory.CoreReflectionFactory.makeNamedType(CoreReflectionFactor y.java:95) (Thread-0) 14:56:24,004 ERROR [STDERR] at sun.reflect.generics.visitor.Reifier.visitClassTypeSignature(Reifier.java:107) (Threa d-0) 14:56:24,010 ERROR [STDERR] at sun.reflect.generics.tree.ClassTypeSignature.accept(ClassTypeSignature.java:31) (Thre ad-0) 14:56:24,016 ERROR [STDERR] at sun.reflect.annotation.AnnotationParser.parseSig(AnnotationParser.java:370) (Thread-0 ) 14:56:24,022 ERROR [STDERR] at sun.reflect.annotation.AnnotationParser.parseAnnotation(AnnotationParser.java:181) (T hread-0) 14:56:24,028 ERROR [STDERR] at sun.reflect.annotation.AnnotationParser.parseAnnotations2(AnnotationParser.java:69) ( Thread-0) 14:56:24,034 ERROR [STDERR] at sun.reflect.annotation.AnnotationParser.parseAnnotations(AnnotationParser.java:52) (T hread-0) 14:56:24,041 ERROR [STDERR] at java.lang.Class.initAnnotationsIfNecessary(Class.java:3031) (Thread-0) 14:56:24,043 ERROR [STDERR] at java.lang.Class.getDeclaredAnnotations(Class.java:3019) (Thread-0) 14:56:24,046 ERROR [STDERR] at org.jboss.profiler.agent.ClassUtil.isSession(ClassUtil.java:152) (Thread-0) 14:56:24,050 ERROR [STDERR] at org.jboss.profiler.agent.ClassUtil.getClasses(ClassUtil.java:94) (Thread-0) 14:56:24,054 ERROR [STDERR] at org.jboss.profiler.agent.Profiler.stopProfiler(Profiler.java:146) (Thread-0) 14:56:24,056 ERROR [STDERR] at org.jboss.profiler.agent.Agent$1.run(Agent.java:918) (Thread-0) Hope this helps! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4153591#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...