Turns out, his home address was posted online and he fired off an understandably irritated message to "one of the lowest human beings" who did it.
Seriously, why would someone share this very private information about anyone?
Ashton wrote on his Google+ page: "If you have my address please delete it. It's my time to be with my family. I love you guys, but I need to be away from people for a while. Thanks to the a**hole who posted my mums address threatening the lives of my family just by doing so. Really, you are one of the lowest human beings I have ever met. Hope you're happy."