The screen never goes to sleep. Whenever I deactivate Sync and reboot the device, the normal behavior is restored. To further test, I wake up the device and let it go to "sleep". I then fired up Sync and the screen never sleeps from that point on. I don't need BetterBatteryStats to see that this app is keeping my device "awake". Keeping the screen on is drainage enough. [bTW, I read the thread that you provided; thanks for the in-depth analysis]