Hello, I am using 149 build under windows 10 64bit, the first experience is good but there are some issues, the notification side does not get Aero, also the start menu and the taskbar, also there is a problem with the firefox 40.0.2 when i change tab or open a new there is a problem, i took a video to show you. Video: https://goo.gl/wHESVB - Thanks!