That clearly shows why using PeerGuardian is a bad idea. Banning dubious ranges from Gnutella will not cause much trouble. PeerGuardian blocks everyone and everything for stuff that is completely unrelated. The servers of this forum have always been in a "bad" range. That's no wonder. Banned ranges almost always affect legit server farms and co-location providers. PeerGuardian is not very effective for Gnutella anyways. It's clearly the wrong solution for the wrong problem. Blocking lists are always problematic using them out-of-context is just insane. If anyone is that scared to use Gnutella, then just don't use it or watch out what you share. Or maybe don't believe the FUD. It's more likely to win the lottery than getting caught for bagatelle. PeerGuardian is not going to protect you anyway. ISPs like Roadrunner, Verizon and many other cooperate with the RIAA/MPAA and others letting them run sniffers and anti-P2P nodes on their dynamic ranges. You can't ban these unless you're willing to ban yourself and the rest of the internet along with it.