Recently ive been trying to find a solution for my imacs wifi disconnection. It randomly shuts off but it says it is connected but the only way to fix it is to turn the wifi on and back on again. I've been trying to find a solution to this for ages. I know it is not my routers problem because my xbox, Macbook pro, ipad 1/3, 2 iPhone never experiences this once. My i mac is currently running on mountain lion.