Are you positive about this? From my understanding, Apple almost exclusively uses Samsung memory and the A4 processor is definitely fabbed by Samsung. The memory and the CPU are usually the two things Apple doesn't stray away from very often, but when they do it usually occurs in the next gen product. I dbout the issue we are seeing is so much a hardware problem as it is software.
Although the hardware and the software are not entirely new, this is still the first generation hardware and software combination for this product. That being said, software bugs are bound to come out of the woodwork and us early adopters (face it, we are such an animal) do get bitten by them. I'm confidant Apple will squash these bugs in a firmware update, but until then we are kind of stuck with them until that happens. We just got to give Apple time to come up with a stable fix that will get the job done. As you said, there could be some changes that might be different between our Apple TV's, but I doubt the differences are any more major than what source they got a cable from. As the system administrator from a former ISP I worked at put it.. Never buy a .0 product of anything. It doesn't matter if the Apple TV is basically an iPad with out a screen and that the software is iOS 4.1.. This is still new and it really is a .0 right now.