get bearshare.. this client is perfect.. just make sure to keep checking back .. its new software and there's bound to be bug fixes ... but i have run it all night and it diddnt crash.. its great. it even tells you where connections hail from.. i had one from japan.. and it showed a little picture of a japaneese flag. it has more features than any other gnutella client.

but about the firewall problem.. im not sure.. but mabey you should try changing your port?