I would take the advice of Wondering Why. See Links below.
Try installing PeerGuardian, it will help keep the fake hosts out...Remember to enable PG just before you start limewire up....
Peerguardian __(FREE)
Another thing if you are using limewire 4.13 and later you can apply this hostile list...
The TechNutopia Fullsize Hostiles List for BearShare and LimeWire