Is your saved directory the same as your saved directory? If not, the files are dled and then not in the shared folder.

If so, the problem is a bit different. Limewire does not autmatically share what you download when you are in teh same session you started in. That is, you download a file. The file will not be shared until you a) Go to your library and click refresh or b) quit and relaunch limewire from which it will automatically refresh.

I hope this helps, and if not, please post your specs and more information about the problem.