Hey ,
I have a similar problem :
I had the old version of shareaza and it worked great, then i clicked update to newer version and since then it hasint been working and im assuming its because it will not connect to ANYof the networks ?(Gnutella1, Gnutella2 or eDonkey)
Ive tried everything ; i checked my firewall setting, ive uninstalled and reinstalled the old AND new version (several times), ive tried the discovery service thing ...PLEASE HELP! ive been trying to fix this for like a month now and im going crazy! :P
Anyway , THANKS!!