A friend of mine wanted me to help him figure out how to install AVG on his computer. He had tried it, and failed, and I thought it would be a simple simple job. When I tried to install it, the computer randomly restarted. Then it seemed sluggish whenever I tried to access the AVG installing software. Are there compatibility issues between mcafee and AVG? Or would it be something else on the computer? He's running windows xp with sp2.