Are you using a Proxy ip address? LW did not auto-filter out ip addresses in LW 4, but does in LW 5. Did you ever install LW 5? LW 5 has a blacklist of ip addresses that are used with default settings.

Another possibility is you have yourself banned a host whilst using LW 4, who coincidentally used the same proxy ip address or dynamic address as you at some point. Answer might be to delete your LW preferences folder.
http://www.gnutellaforums.com/downlo...e-section.html The Gnutella Forums caters for many Gnutella programs, LimeWire, BearShare, FrostWire, Gnucleus, etc. You posted in the wrong forum section, not the LimeWire section.