Hi, Not sure if it has been posted on here, but I traced my tablet sleep problems to Yahoo Messenger. I would put the tablet to sleep fully charged when I left work and when I got home or about two hours later it was at like 40% charge (and warm). A powercfg /ENERGY command revealed that the Yahoo Messenger modifies the interrupt timer to wake the processor up much frequently than system default. When I closed Yahoo Messenger, the battery charge went from 100% to only 96% during the one hour sleep. Over 12 hours, the tablet went from 100% to only 95% without Yahoo Messenger. For now, I developed a habit of closing the application before putting the tablet to sleep, and have even stopped using it. I read something about a new version coming, if that doesn't fix the problems I will stop using it for good. What's funny is that the Android version is also a power hog that halves the battery life if installed. Not sure what kind of engineers does Yahoo have.