Not a big deal, but I found this while playing with FindBugs (while I was watching TV today :-) ) management.MessageCounterHelper has a static DateFormat. And from DateFormat javadoc: http://java.sun.com/javase/6/docs/api/java/text/DateFormat.html "DateFormat javadoc" wrote : | Date formats are not synchronized. It is recommended to create separate format instances for each thread. If multiple threads access a format concurrently, it must be synchronized externally. | :-) View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4238082#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...