I have this problem constantly. I am extremely sick of it and suspicious of it too. For several YEARS I have had WiFi turned OFF. It never ever once turned "itself" back on. Being the admin of this machine, I assumed I am in control of settings like this. I read the above thread, and I am not looking for someone to sell me the benefits of WiFi or tell me what to do with my machine. If turning WiFi OFF was not supposed to be user interchangeable, why the hell would the computer have the option to do so?
So.... Why is it that my WiFi turns itself on all by itself at random? Anyone know? I want it to stop. Apple don't seem to give a damn on their forums, which is no surprise given the past few years of decline in service there, so hoping someone here might have some ideas as to what process is causing it and how to resolve to allow me to use my computer with WiFi off like I have for so long. Thanks