<blockquote>Nest said the issue had since been fixed for 99.5 percent of its customers. And to be fair, the company’s tech support has been working hard to help users who are affected. But the fix can require customers to follow a <a href="https://nest.com/support/article/What-to-do-if-your-Nest-Thermostat-has-become-slow-unresponsive-or-won-t-turn-on">nine-step</a> procedure to manually restart the thermostat, which involves detaching the device from the wall, charging it with a USB cable for 15 minutes, reattaching it to the wall, pressing a series of buttons, charging it again for at least an hour, and then. …</blockquote>
via <a href="http://www.nytimes.com/2016/01/14/fashion/nest-thermostat-glitch-battery-dies-software-freeze.html?_r=0">Nest Thermostat Glitch Leaves Users in the Cold - The New York Times</a>.