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Summary: Can you add to my checklist of things to watch out for when migrating to iOS 5? StackOverflow has been invaluable as I've worked on upgrading to iOS 5. I've discovered some pretty basic things I'd missed prior to Xcode 4.2, and I'm wondering what other "gotchas" might be lurking. Detail: With iOS 5 shipping this week, I've had to make some changes to a couple of my apps. Xcode 4.2 does a much better job analyzing memory management code because of the new ARC feature. The iOS 5 update is a great point at which to review all your memory management code. The new compiler also finds a number of other issues that earlier compilers missed. Kudos to the Apple compiler engineers. Here are the main things that have helped (and many of them will also apply to earlier versions of iOS). Make sure to call [super dealloc] at the END of your dealloc methods , not the beginning. In viewDidUnload, some people have reported bugs that require [super viewDidUnload] to be called at the end , not the beginning, of your viewDidUnload. Understand retain counts, synthesized setters, and when to call release or autorelease. The new compiler will point out more problems than the older compilers did. (I thought I'd been careful, but apparently I wasn't careful enough.) Apple's memory management guide is required reading -- no shortcuts. It's a good idea to turn on zombies when debugging (in Xcode, choose Produ

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