In the 9841 build, if you were running Nvidia multi-monitor displays, the Nvidia Control panel was put in a situation where is was not able to make changes to monitor configuration (or anything else) because some app was open and needed to be closed. The open apps it would refer to were apps showing in Task Manager but did not have a window associated. It appeared "ApplicationFrameHost.exe" was involved in keeping those apps showing as running and when the Nvidia Control Panel checked for open apps, they would show. I was really hoping this would have been fixed in 9860, but the situation appears to be unchanged. It does appear the sleep situation where Svchost.exe were showing in the powercfg -requests listing were keeping the system from sleeping has been resolved.