I have 4 internal 1 GB drives. Though only used a portion of them for such files.

Did you disable sharing files as soon as you download them in settings? aka 'Share Finished Downloads', in Sharing option. Though sounds like this is not the problem.

In LW's share options, you can drop the main folder, just share the sub-folders underneath by adding each at a time. Else simply as suggested in previous post, right-click & choose stop sharing folder. For multiple files, hold down SHIFT key to select multiples.

As suggested earlier, you could start your settings from scratch by deleting the LW preferences but must be done whilst LW is closed. Sounds like your LW preferences might be partially corrupted.