uTorrent only works with VPN or else it will slow down connection

[nekojan]

When I'm not on VPN network and not using uTorrent, everything works fine. Then I start uTorrent , the internet connection goes really slow or almost stops working and I cannot download anything. When I quit uTorrent, the internet works fine again.

Now if I try connect to my school network using VPN and start uTorrent, everything works fine include downloading.

So, should I change any setting when I'm not on VPN to make uTorrent works?

[GTHK]

http://forum.utorrent.com/viewtopic.php?id=15992