I too, have suffered from connection problems for about the last month. Sometimes I have to clear the discovered hosts list and the connected hosts list and immediately exit and then start the program up again. This, however, does not always work. Router.limewire.com appears to be dead most of the time, so remove this from your autoconnect list if its there. Today, the only thing that has allowed me to connect was adding the first address returned from a lookup on gnutella-again.hostscache.com

Even as I type this, I notice the number of hosts supplied from this machine is now down to 6, from a high of 120 a couple of minutes ago. Sigh.

I am growing weary of having to play all of these games just to get a decent connection. It used to work so well... I wish I knew what the underlying problem was. I have a nice DSL connection and its almost useless with current state of the gnutella network as presented by LameWire.