That is not a problem. The Servant you attempted to connect to may have had its max number of connection allready and just refused your request.

learn more by reading these.
Good Info sources:
http://www.limewire.com/index.htm Check the developers section
A couple of things I have written:
http://forums.gnutelliums.com/Forum1/HTML/000032.html
http://forums.gnutelliums.com/Forum1/HTML/000024.html