First copy had a very badly, and I mean very badly, gouged disk but good old Amazon, as usual, replaced it without quibble. So apart from the extra couple of days while they shipped a replacement and remembering to pop the 'broken' one in the post, no real biggy.
As to the series itself, while this version doesn't have the 7th. 'musical' episode, which BTW, having seen, is not missed, it is quite an excellent little mini series, almost on par with the beeb's output. Plus, it does have the wonderful voice of Stephen Fry narrating the four main episodes, always a bonus. Even the 'making of' and the 'science behind migration' episodes are pretty interesting even though they aren't narrated by Stephen.