2012 MBA 13.3" i5, 8GB RAM, 256 GB SSD. I *thought* it was BTO (wanted ML pre-installed) but obviously they just pulled it off the shelf somewhere. No sweat, though.
No wi-fi issues. It acted sort of funny on initial setup, kept going back to the beginning until the third try. Then I saw I had three accounts created so just deleted two of them (not the guest account.) Seems to work fine now.