Item on The Unofficial Apple Weblog: Apple Genius says: Moo’ing normal.
Same item as quoted on Powerpage: Apple: It’s Normal for MacBooks to Moo.
Now I’m not a professional journalist, but even I can tell the difference between one offhand comment by one employee at one Apple store, and an official position by Apple the corporation.
Also omitted from the quote on Powerpage: the part where the TUAW writer then called AppleCare and is having his MacBook repaired under warranty. (Of course, the Apple Genius should have handled this…)
It’s becoming increasingly difficult to take Jason O’Grady seriously. How he ends up writing for ZDNet is beyond me.
(By the way, my new black MacBook does not moo.)