With iOS 5, It’s Cache as Cache Can
Marco Arment, developer of Instapaper, explains why iOS 5 could mess up Instapaper and many other apps. If an app stores a lot of data in Documents, Apple now slaps its hand because Documents can be backed up by iCloud; but if an app stores a lot of data in Caches, iOS 5 can now delete that data at will. So any app that moves its data store from Documents to Caches can lose that data. Apple argues that this is okay because Caches is for data that can be reconstructed — say, by re-downloading it from the Internet. But what if the deletion happens while offline? Someone with a Wi-Fi-only device could store stuff just before leaving the house, only to find it gone later. And, as Marco points out, Apple deletes the data but the app developer receives the hate mail.
It also screws up email attachments as well. Security dvr's send emails when cameras arr activated. In my case 11 kb 3 video snap shots. Since the only distinction is the time stamp shown in the email header iso5 keeps sending the first photo and not new different photos.
This issue will reportedly be addressed in the eagerly awaited iOS 5.0.1.
I am still having this issue in 5.0.1.
I use a qsee system that send email attachments. All of the attachments are the same photo. Happens using iOS 5.0.1 mail app