I have a homegroup set up with a Windows 8 desktop and my Surface RT. I'm intermittently unable to ping the Surface either by name or by IP from the desktop. I seem to consistently run into this problem. After restarting the Surface, I can ping it successfully, but after some amount of time (not sure exactly how much but probably on the order of hours rather than minutes) can no longer do so without restarting again. I fail to do so both by name and by IP. I can ping the desktop from the Surface. Anyone else seen anything like this or know what might be going on?