"manik.surtani(a)jboss.com" wrote : In 1.4.X, shouldn't the bounded buffer also be initialised with something a bit bigger than the default 1024? | Actually, looking at this again. You had already changed the capacity of the recycle queue to 20000 rather than the default 1024 somewhere in between 1.4.0.SP1 and 1.4.1.SP3, so we're fine there. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4142852#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...