I came home this evening and found all my exterior lights off. They should have been turned on by my Indigo application (which has an iOS client), however, when I attempted to reach the Indigo Server running on my Mac Mini, the server was unreachable, even on my local Airport LAN. I went to the computer and found it asleep. I woke the computer and then everything operated normally.
I then went into System Preferences -->Energy Saver -->Power Tab --> Computer Sleep - Never
Wake on LAN appears not to work. I've tried, lord I've tried, but Mountain Lion on my i7 Mini has never seemed to support wake on LAN, however, my ancient Dual Core 2 Mini with Lion did.
Not a great outcome, guys. I guess I'll be burning more power, having defeated the Energy Saver settings, which is sad. I'm going to the Apple Store on N. Michigan Ave in Chicago for an iPhone problem, but I'd take my Mini to the Genious Bar, but since I don't want to rip out and take my network, too, it seems unfeasible.
So, here I am, defeating the Energy Saver feature because Wake on LAN does not appear to operate.