Also getting this error message. Only had Pi up and running for 10mins so not sure if it's linked at all, but it seemed okay until I plugged in my powered external usb hard drive in, this would be recognised for a few seconds then disappear and a new pop up would appear saying a new device has been recognised, this happened over and over again.
Now after a few minutes of booting if I haven't managed to login to the desktop I get the error message, or if I manage to quickly login then the screen will appear frozen as the keyboard and mouse stop working, there doesn't seem to be any power running to my keyboard or mouse as infra red light is not on.
