Ok I checked out your latest tweaks on the trunk, and it seems like the problem is gone. 10000 messages sent and received without any hiccups!. That's great! As a side note, it took 12 minutes for the full round trip, which translates to about 14 tps. Any tips on how this can be improved? Of course this is on my crappy laptop, but I will try it later on my new desktop, which has the Intel i7 processor. Thanks again for nailing this issue. Naresh View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4244198#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...