I think it's time that the Gnutella protocol is officially updated. Or perhaps make a seperate 'Gnutella v0.x' protocol altogether? The network isn't as efficient as other types, and no matter how many subtle changes developers introduce with their clients, there will chaos, and everyone will be using a different idea or implementation. And seeing the number of new clients appearing everywhere, it would be best to have them adhere to a better standard than the out-dated 0.4 protocol.