I must of known this was going to happen as I didn't preorder this one
Really though, QC is prone to human error and human laziness, so a certain percentage of releases will go tits up in some form or another. There does seem to be a bit of an uptick in mistakes recently but I suspect overall the number of releases, as a percentage, that have gone wrong, remains fairly constant.
I'm not saying you shouldn't be irritated if it happens to you but I think having an acceptance that occasionally you will have to enter into a disc replacement programme may be easier on the blood pressure
