Downloads starting from 0
 

Everytime I open Limewire after shutting down my computer my downloads always start again from 0kb, even if they're in my incomplete folder already half downloaded. This is driving me crazy as I have to keep my computer on for ridiculously long periods of time to complete my downloads and I often end up having a dozen of the same file in my incomplete folder! Why don't they just resume from where they left off?