Vista has its own firewall. You will need to go to the control panels to disable that. Norton should be fine if Vista firewall is not running.

Some more details needed: System details - help us to help you (click on blue link)

One thing to try in meantime is: http://www.gnutellaforums.com/334551-post21.html download that file, unzip, take the first gnutella.net file you see out of the folder & replace the older gnutella.net file inside the LW preferences folder; http://www.gnutellaforums.com/genera...der-vista.html