For what I get from your post, I think I had that same problem some time ago... A small workgroup network with few workstations and connected by a router... This issue could be related with internal network/ ISP congestion due to that certain user being using p2p software and news leechers (for example). Try to install a network bandwith controler by certains processes: Du super controler or netlimiter... Search on google for those. Hope It helps. [] SteelWarrioR