One of the sources has accepted and queued your request, but LW continues to check for an other or better source, I believe. You should see the number of the alternates change in the tooltip results as time goes by and more sources are discovered or rejected.

In other words, there's still a lot going on behind the scenes. You can glimpse some of it by having tooltips turned on.

btw, upgrade to the latest version (3.5.8)--there's even a beta 3.6.0 available. You should keep your old version installer, though, in case of problems.