Here are a few: Since the operating system continuously polls device drivers, performance could slow. In certain instances, the fidelity of content could be reduced during playback. Peripherals could be remotely disabled by Microsoft itself, should they be compromised. Older peripherals may have to be replaced once they are no longer commercially supported. And overall, the OS has a whole layer of built-in control that remains out of reach to administrators.
“Even without deliberate abuse by malware, the homeland security implications of an external agent being empowered to turn off your IT infrastructure in response to a content leak discovered in some chipset that you coincidentally happen to be using is a serious concern for potential Vista users,” Gutmann wrote.