The HornetQ Threads are not closed properly. This causes memory leaks, which can lead to test suite stuck.
See  after each test class.
Aug 21, 2012 9:59:03 AM org.apache.catalina.loader.WebappClassLoader clearReferencesThreads
SEVERE: The web application [/metamer] appears to have started a thread named [Thread-0 (HornetQ-client-factory-threads-1849147-2133832)] but has failed to stop it. This is very likely to create a memory leak.
In Myfaces(only) there are also problems with closing ThreadLocals
Aug 21, 2012 9:59:03 AM org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
SEVERE: The web application [/metamer] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@f659f0]) and a value of type [org.apache.myfaces.context.servlet.ServletExternalContextImpl] (value [org.apache.myfaces.context.servlet.ServletExternalContextImpl@18ad373]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.