Hahaha Jax- unlucky! 
Having worked in publishing, on the editing side it's more likely the editors are rushing through the jobs as they've got eleventy million other books to work on at the same time. Job cuts have been huge across the industry over the past decade and the time the book is being developed has been massively cut as well. When I started, way back in the mists of time, after the manuscript had been edited and sent for setting, there would be at least 3 proof stages, a press proof stage and a camera-ready proofing before it went for print - now it's one proof stage, a quick whizz through the press proofs and print!
Anyway, back to annoying mistakes in books! Is it at all possible to squeeze one in about an annoying mistake in a factual book, not fiction? Years ago I was reading a great book about the history of pigments - yes, I know that makes me sound beyond nerdy but it had it all; history, geography, politics, geology, chemistry, history of art, social changes, the lot, it was brilliant, and then in the chapter on "Black" the author revealed that
"'khol' [in the black eye make up] derives its name from the Arabic word for 'eye'"
except as I speak Arabic I know that the word for 'eye' is 'iyne' and the word 'khol' comes from 'akhal' which means, er, 'black' (hence the name!) . As the words "eye" and "black" are hardly obscure, esoteric terms that are not easily checkable, this did make me wonder what else in the book was wrong....
Gosh, I've carried around that grievance for years! Thanks all! x