I got the impression that Macbooks were all shipped from China. Mine appears to be shipping from California. I ask because I was hoping to get newer stock, which would be implied if shipped direct from the PRC.
Maybe I'll change the topic somewhat, since I think they're all shipping from the PRC.
I'm wondering one factory is producing more defective units (ie: heat, "mooing", etc) then the other. Post your ship from location and if you have any defects.