yes I've experienced the same from T3 so called speed setting users recently. People can set whatever speed setting they desire in the older version LW & that caused problems.
I'd suggest you replace your old gnutella.net file. Try the one in my attachment. Use your Finder File menu options for Open with Bom Archive opener to open it. Then drag & drop the gnutella.net file into your LW preferences folder.
'One' problem with the earlier version LW's. Anything below LW 4.14 will not be able to connect with the later versions 4.18 or higher.
If you wish, I do have a version of LW 4.16 basic you can use. I have it already uploaded. Simply send me a PM & I will send you the link. I actually generally use LW 4.16 but the pro version. Not that it makes a dramatic difference. But perhaps helps me in my seeking the rarer files.