Definitely send it back as soon as possible and let Apple know you believe it is unacceptable to release a product with this type of issue. I find it VERY hard to believe Apple was not aware of this issue given the number of individuals reporting the issue.
I'm surprised this issue is not being reported by the mainstream media given the latest Apple "
Time Traveler" PC vs. Mac commercial.
Unless everyone comes down hard on Apple, who pride themselves on building products that "just work", they will simply allow this to happen again with the release of the next product.
When Apple does things right we need to congratulate and applaud them and when they do things wrong we need to call them on it.