1st suggestion is not to use the Resume or Find Sources button on many files (if any.)
The best way to continue dwnlds is to manually search for the sources. If you're searching for music, don't just rely upon audio searches. Also try a General search type. Many people don't label their files very well so a general search can often find these other files.
Some hints: A well set-up LW can start to automatically continue its dwnlding after it's settled down perhaps 2 out of 3 times you open LW.
Optimising LW & Maximising Uplds & Dwnlds A (1st post only) & also
Part B which is even better & last & least are
search & dwnld hints. The latter one I've been thinking about re-writing for some time. That's just for playing it safe. eg- I show all speeds & qualities.
Depending upon how many incomplete files & shared files you have, the settling down period of LW might take between 10 mins to an hour!!! So keep that in mind. Don't use all of LW's resources until it has loaded every thing at least.