Well there are no servers, you just connect to other peoples' computers. The results that you see are files that other users are sharing from their computers.
Usually, 'need more sources' & 'awaiting sources' messages mean that the host you were downloading from has gone offline, stopped sharing the file you want or has no free upload slots for you. The best thing to do is probably to start a new search. The network's constantly changing as users log on & off, add to their shared folders etc & so a new search can yield different results. The FAQ is pretty good for explaining heaps of things
http://limewire.org/wiki/index.php?t...sked_Questions

If you see a host who has a file you like, try to browse them... they might have more of the same. But... unfortunately Browse Host is quite unreliable . You have more chance of being able to browse a host if they have Chat enabled (you'll see a smiley) & if they're using LW. FrostWire (snow) or BearShare hosts are often easy to browse too. You could try to use Chat to contact a host who looks interesting, also you can try to Direct Connect. More info about that here
http://www.gnutellaforums.com/showpo...63&postcount=3

This explains quite well how the Gnutella network operates
http://en.wikipedia.org/wiki/Gnutella