The Gnutella Netwk does not use centralised servers unlike some of the earlier p2p share networks (which have gone to court to fight about issues related to offering copyright material on central servers.) Instead, the Gnetwk is only users like yourself sharing files between each other. Yes some have fast connections & some slow. Some share a lot & some not so many.

Some tips to help you can be seen here: To continue files downlding (click on link) & see all the off-shoot links as they contain lots of hints & skills you may find very useful.