It seems I've been infected by Powelik and Adclicker Trojans? I keep getting alerts that Norton is blocking them. I also get alerts for high CPU usage by COM surrogate. I've downloaded the updates, run scans, run Power Eraser, opened my computer in Safe Mode and run full-system scans. Apparently my computer is clean but I'm still getting these alerts. I'm not a computer guru by any means so I really need some expert help here. My computer is less than a year old and I don't want it crapping out on me!