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I suspect the issue isn't with the store corrupting binaries but the application servers being under heavily load and dropping connections to the user. Begs the question why they aren't doing MD5 validation of the binaries before launching and notifying the user.

It is 4th July holiday after all. Lot more traffic.

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They're distributed as .zip files (renamed .ipa), so a corrupted file or bad download wouldn't extract anyway. The real issue here is in their DRM: they have to re-encrypt the binary for each user, and the encryption seems to be incorrect in some cases. That's also consistent with the FairPlay log error in Marco's post.

If that were the case then it would affect all apps rather than a small handful of apps that updated yesterday.

Christmas day is the big one for the App Store. I doubt July 4 comes very close to that.

July 4 is actually bigger than Christmas for our apps. We have an outdoorsy app.

Not necessarily. All the apps are cached by Akamai so it could be that newly created app bundles get retrieved directly from the source.

Also July 4 is a pretty big holiday as far as usage patterns go.

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