can't stay connected

I have been successfully using limewire for over a year. However, for the last few weeks I can't stay connected for more than a few seconds. I am behind a firewall and use a router but these have been in place the entire time I've been using limewire and I've downloaded hundreds of files with this setup. I've pinged my isp and gnutella ok comes back so that's not the problem. I can see my connections start up and it always says 10 hosts, 10files available but then the connections disappear and even though the disconnect button usually stays green I have no connections and cannot find anything on a search. I've tried uninstalling and reinstalling Limewire, I've added all the conncections you've recommended and nothing works. Please give us some new suggestions and not the same old ones that simply don't work. What is wrong with limewire? I can't believe that this many people are having the same problem and you don't know what's causing it.