having a issue with my connection. Basically ive just spent all last night and this morning taking stuff from my old pc and copying to my new one

Lot better...
Re installed blueyonder...works fine but twice now i have left bitorrent D/Ling something while ive left the pc and gone out, when i come back its stopped d/ling and i also cant get on the net without rebooting.....
Any ideas? I have installed new firewall, virus program and microsofts anti spyware, not sure of this has anything to do with it?????
Please help i know nowt