Is it more or less secure to run two virus protection programs simultaneously? John Cansick
It's generally a bad idea to run two anti-virus programs at the same time. These programs generally work at a low level, and some of them do not follow standard programming approaches. (Nor do virus writers, of course.) This can lead to conflicts between the two programs, causing crashes, as well as slowing down your PC. You can still perform double-checks by using a site such as Trend Micro's HouseCall.
