I know it's not recommended but I have just shut UAC off completely. I've been running like that with Vista and now 7 for several years and have not had a problem, but I have good security software running and am fairly careful about where I go and what I download and use virtual machines to check out questionable stuff. Also I always have recent clones and back up images of my entire system offline so it would be relatively easy for me to recover from any disaster, should one occur. For my wife and non computer people like her, however, I recommend keeping UAC on, but for the knowledgeable enthusiast, who is willing to take the kinds of precautions and safeguards mentioned, I think it's OK to turn it off.