I use AVG. Norton is a resource hog...and it doesn't catch all of the viruses. 114211, I recommend you download a program such as AVG or nod32, they are not resource hogs like norton and kaspersky.
I Use Avg Antivirus Pro (8) at the moment since i found This 10 years FREE License key for this, you can use this method to activate AVG Antivirus for next 10 years (till 2018)
One most trusted antivirus Kasperssky.It make my laptop free from all threats. and easy to use,faster than all antivirus softwares
Dear Friend, Here I am new member. Read your question. And currently i am using mcaffe anti virus and it is good service.
Avast Home Edition on my PC - it's free, and I've seen it catch more stuff than any paid service I've had.