Just a note that CP set at the Max/Beta level in Win 8.1 Pro 64-bit causes TWO icons for the program StartMenuX to appear in the "tray" (the area at bottom right near the clock). By the way, I'm seeing this in the Desktop, not the Metro, as my machine boots directly into the Desktop.
If I set CP down to Default, this does not happen.
No idea why. My PC has 16GB RAM, so it wouldn't be a memory shortage.