For the longest time, I couldn't figure out why I couldn't connect to this private hub, and then I finally discovered that if I disable PeerGuardian, I can connect to it. Once I enable it, though, I can't connect and I believe I might even get kicked off, though I haven't tested for that yet (just happy being able to share again!).
My question is if there's some reason that PeerGuardian isn't allowing me to connect to said hub and if there was any way to remedy it.