This happens for every app.
For testing purposes I am using the StreamSocket sample app from msdn. The device I am using is a WinRT ARM device.
Here is more on my setup:
I have the Remote Debugger installed on the device, the device and the win8 machine are on the same subnet and I have changed the project settings in VS 2012 to use Remote Machine.
When I click "Remote Machine" in Visual Studio, the app builds, deploys and then starts loading symbols.
At this time, I see the splash screen on the device and at some point I get a pop up on the Win8 machine saying, the connection to debugger has been lost.
The device is stuck on the splash screen, I can't go back to the desktop or close the app, its non responsive.
The Visual Studio "Debug" log shows that it failed to load some pdbs. That's about it.
I haven't set up the crash dump yet, I did see your reply to some other post about crash dumps. I'll try that out now.
Thanks Rob!