We recently completed an app using flash builder and submited it to apple for approval. Our final builds tested great. However, once the app was approved from apple there was a noticable difference in performance between our builds and those downloaded from iTunes, both in performance and size. Performance was noticably slower on iPhone 4G. The size almost trippled. The ipa we submitted was 8.8mb, the one from iTunes is 23.4. Any idea what could be going wrong here? I read the size may be due to apple's encryption? Any truth in that? Any help or ideas would be greatly appreciated, we are scratching our heads over here.