I was told by a Apple rep at a local apple store that "contrary to 14 day return policy" they would honor (these are his words) in fact 30 day return (if it turns out the problem is hardware related).
Contrary to chicken little the "sky is falling" complaints about quality control or Apple verifiying hardware before shipping, I dont believe that whatsoever. Apple does extremely extensive testing on their hardware before shipping.
However that being said, wifi and networking is to a GREAT extent not based in the hardware itself whatsoever. Rather in ISP protocols, wifi signal wattage, communications protocols, base station varieties which exceed near infinity...and on and on.
That Apple Inc. isnt claiming "any problem" with the new Air is nearly entirely correct sensibly, since this is likely a simple OSX handshake to wifi fix, or firmware fix, or wifi firmware instruction to increase power output; and therefore is not a hardware issue related to any and all components within the Macbook Air.
Having worked for a large multinational hardware company, the hardware guys were ok happy go luckys.., but the networking guys always looked stressed, logically so, when youre talking WIFI and networking, your dealing with maybe about 20% hardware side issues on its OS or fimrware..... and 80% infinite router and basestation configurations that boggle the mind. That 80% is not something anyone should fault Apple for, rather there is no really down the line standard super-standard for wifi communication between 10,000X devices and 100,000X routers and base stations.
I dont envy anyone who tries to diagnose wifi / routers and make any hardware comunication 100% on such diverse networks and protocols.