Power Nap Not Showing in Energy Settings of my 2012 MacBook Air

I've updated to Mountain Lion, I have a new 2012 MacBook Air. Is anyone else able to see these settings? I can do a spotlight search for power nap, and it takes me to energy settings, but I get nothing else.

im having the same issue as you zaze. my march 2012 macbook air hang every single time when it try to wake up from sleep mode. it started to happen after i upgrade to mountain lion and then the smc update. i believe is the smc update[power nap specifically] issue, because before that patch the Mountain Lion OS is doing fine[i update the smc patch a week after it was release so i'm pretty sure is tht smc patch issue.
tire of playing around with the config, on this and off tht, it does not help at all and still hang[keyboard not responding , screen hang, sometimes cursur can move but it can do nothing with it].
i need to go through this multiple times a day until i so fed up that i change sleep mode to kick in after it idle for 1 hour.

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