Despite what people say about free AV's they are not a patch on the paid for products. Just bought a 2 year license for Kaspersky Internet security suite, Less than £33 for the electronic version, what a bargain, for what is a highly thought of piece of software.
People say they have used AVG or Avast or something for years without infection, but if these programs don't do a proper job, you won't know you are infected, will you?
Do yourself a favour, and remove AVG, and buy KIS7 or KAV7 or Eset NOD32, and I'm sure you will se the benefit.
*** OK, Tin helmet firmly strapped on, fire away.**