Excessive Internet traffic

I keep getting excessive internet traffic and Norton says it is possibly infested.

When I do a virus scan nothing is picked up.

I have advised about a product called AdwCleaner and that removed some stuff and it seems OK for a while, then it happens again.

A pop up does occur occasionally indicating Norton Power Eraser can help, but it does not as my system uses WimBOOT - what as I supposed to do now to remove this infection?

Why have I got Norton if it can not help me?