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Is your LW connected at all? How many green/blue connection bars do you see?

Leave the windows firewall off & configure Norton's firewall to allow LW.

There might be a firewall within your modem/router

If LW isn't connected at all, try the advice here: http://www.gnutellaforums.com/connec...t-fix-try.html
Start off by deleting LW's preferences folder & changing Java versions.