Thanks Brian, I did not see your reply until today. it would have saved me sme pretty frustrating intervening days. When I try the -b option, either of them it works with no problems, if I remove the -b option the problem recurs. The problem was pretty vexing, because it occurred on two different networks that were administered independently. It happened every time I tried it as long as I had a valid setup. I am kind of a cygwin junky, and the only commonality between the two environments was that I started the servers from cygwin with run.sh do you think this could be related to the issue? None of the servers are dual homed, so I was dubious that your suggestion would work. Another curiosity is that the problem happens in 4.2.0, but not in 4.0.5 At this point I have rolled back to 4.0.5. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4091790#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...