Google is great, in regards to privacy loss and security issues. Ever noticed that Google Chrome just downloads things by default, doesn't need to prompt you? Or that Google's results are different for each person? Or how about that Google is trashing YouTube, not only by practically forcing users to use Google+, but also trashing the software. I never used to have video playback issues, now I do non-stop.
Google isn't very good.
Back on topic though, what Antivirus are you using if it's not Norton? My guess is your PC has been hijacked or your IP is bad (proxy user?).