Couple of things on Thread.getAllStackTraces() It leaks :). Fixed in 6u1 http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6434648 From: http://wiki.jboss.org/wiki/Wiki.jsp?page=StackTrace anonymous wrote : This function returns the information provided by Thread.getAllStackTraces(). This does not include the light weight thread id, which is important for troubleshooting hung and spinning processes; therefore, it is recommended to use the methods described above to obtain the stack trace if possible. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4120231#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...