LimeWire is the best it works for a wide selection of OSes and has better features/operations (d/ling, searching, etc).

The reason download speed is slow low is b/c your a modem. When you used Napster, the program send a napster server a list of your files. So people would connect to napster's server and perform a search. Sending the results back to the person (client) with a list of hosts with the files he searched for. Well with gnutella is based on a server/client (servent) program. You're a server and client at the same type. So while you're connected to 2000+ hosts and have a TTL of 10. That means from the host your connected too and 10 hops (hosts) after that a host can send you queries. You'll notice on your Connections tab showing the bandwidth (mostly look at the Input). Right now on mine I'm connected to 846 host with 3 incoming and 1 outgoing connection. Each input of bandwidth is ~.5 KB/s. I'm on a modem so my downloads are going to be slow. Most of the time when I'm connected to 2000+ hosts (50+ TB) when I start searching I drop connections b/c I cant handle the bandwidth (thats the way limewire is designed). Another reason why your downloads are so slow. Because people with sufficent bandwidth such as cable/dsl or higher connections like to set their upload speed to 0.0 KB/s which in my opinion just as bad as freeloading.