Been working great for some time now. A "must have" when burning a dual layer during the summer and your air conditioner is not working! Never had any problems from install to daily usage. I now have it set to start-up when I log on. I'm on Intel with 10.5.7 now. If your having problems with over heating, even to the point where your computer shuts down, clean out your fan vents and use this software. Can't beat the price. FREE.