you don't need to register, but do need to give enough info so that someone who had a similar problem could tell you of their solution. Unregistered users are sometimes trolls or not very serious, so are more likely to be ignored though.

If suddenly and repeatedly you are getting no sources, something is amiss.

Easiest check is to uninstall all the old pieces of LW and download a fresh copy of the latest version or the latest beta version. If the problem persists, try a different client to check that your system allows responses from the gnutella network.

If neither client works, something in your system or upstream of you is blocking gnutella responses.

Details? Depends on your system.

cheers