A well caliberated LW can almost instantly start to continue dwnlding incomplete files. Particularly if LW is given a chance to settle down a bit. I've left LW on for several hrs 'without' doing a single search & dwnlded several files. However, we're not always so lucky. And as Murasame said, we need to manually search for sources. And there's also those days we need to 'baby-sit' LW to continually help the process along.