Hi , lately my internet has started acting weird . It works fine for some time then suddenly it stalls for long periods . What i mean is , the sent-received windows both turn black and the websites stop loading .I just checked utorrent now in the morning and all downloads were also stuck.I havent changed any settings . Ive been using mtnl for 3 weeks now . This problem is occuring only for the past few days.Any help would be great . ThanksRouter is GLB-502T