Is there a way I can prevent new downloads from starting, but allow in progress downloads to continue to completion, when Limewire is in the system tray? I am using version 1.6d in Windows 98.
Sure. Before you minimize LimeWire, go to Tools > Options, Uploads Tab, and say 0 uploads maximum. It will let your current uploads continue, but no more will be able to start. Make sure to change it back to whatever you had it at before when you use LimeWire again, or people won't be able to download from you anymore!