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

Try removing all LW rules from Norton's firewall & then start from scratch & add new ones. The 2 links below have some info.
PortForward.com - Free Help Setting up Your Router or Firewall
http://www.gnutellaforums.com/226610-post6.html

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thanks for that but it hasn't helped.
i have 1 bar on the connection indicator and am still showing a firewall detected.
windows vista firewall remains off, i have removed and reinstalled LW and have reset all norton blockers to allow access for LW. what i can't understand is that i had access but have lost it in the last week without changing anything.
could it be a windows update that has caused the blockage.
my router is a BT voyerger 220v but this hasn't been an issue in the past.
i tried the suggested links but nothing has changed.
getting stressed now as i still have no idea where the firewall is coming from.
thanks again
s