uvdynamics - 2011-07-26

I have a weird problem.  I have 2 almost identical server with both window 2008R2 SP1 and running same java/jee web services application and using jmdns to register the web services so that my java swing client can discover this services in any of the 2 servers.  The problem is that my java swing client can only see the webservices from one of the server only and not the other one.  Both servers are located on the same domain and router and accessing both server in local network.  I've even compared both server services - what is enabled and disable and they are almost identical except for some services that is not related to network discovery or publishing services over the network.  Does anybody have this same problem or anybody can point me to where to look for the problem.  Any help or info or advise I really appreciate.
Thanks