Maximum PC: Not only do the vast majority of PC users run some type of antivirus software, but most of them pay for security, according to a new survey by AV-Comparatives, an independent testing lab. There's not a wide gap between those who pay for security software and those who opt for freebie programs -- 51 percent to 47 percent, respectively -- but it is interesting when you consider that Internet security suites have a stigma of being bloated and slow.