[K.B.]

OK, services.msc:
Disabling Automatic Updates makes sense, but BITS says 'uses idle network bandwidth to transfer data'. That sounds like a good thing, and is only the means by which an auto update is performed, not the command itself. Correct me if I'm wrong...

There's a few others in there worth disabling while you're at it, like NetMeeting, Remote Desktop, Themes, Routing and remote Access.