How is it hanging? Is "power down" the last message you see on the screen? If so, then this would be a bug in the kernel that renders the code that is supposed to allow the system to power off by itself not working...
How is it hanging? Is "power down" the last message you see on the screen? If so, then this would be a bug in the kernel that renders the code that is supposed to allow the system to power off by itself not working...