So you don't have problems with people uploading from you then? So after LW was open over 30 mins you did this test: Bug Report instructions & sample image and the result is True?

Sometimes when I have an inconsistent downld or just drops to zero or needs more sources, I'll select it in the downld window & press Stop. Then re-select it from the Search results & press Downld again. I'll back that up with occasional new searches.

Is your problem happening all the time or just occasionally?
Is your modem/router USB or ethernet?