But are you using Gnutella 1 or 2 network? They are different! 85+% of represented programs on these forums don't support the so called gnutella 2 network. Each network has its own problems you will find out over time. G1 or the normal gnutella network has many, many more users & files.

Gnucleus is such an example. Have you tried it? After all, the code used in this program is mostly based off it.