I dont have any task at that time. I think that my isp use some traffic shapping rule base on time.if I want to use my full bandwidth I have to use a download accelerator that opens 10 connections at the same time. Example download with accelerator 740kb without accelerator 50 kb or 60kb. This happens after 6 p.m. ,, before 6p.m. I can download without download accelerator.