Extremely slow connect process and setnet32 processing

I had I-CLI 2.5 working fine on an NT 4.0 client to an Informix 5 server. I configured access to a 7.2 server. I now experience extremely slow connect times as well as an extremely long delay starting up setnet32. It is apparent that, during startup of setnet32 (and probably during the connect process) that Informix is searching the network for something and eventually timing out. I cannot figure out what I changed to cause this behaviour. Thanks Jerry Flood