On Dec 14, 2009, at 5:54 PM, PCWiz wrote:

> Its being loaded into an NSOperationQueue, and I'm using methods like 
> setObject:forKey: on the dictionary, not replacing the whole thing.

Then you need to lock and unlock everything that reads from or writes to the 
dictionary. Properties are no substitute for locking/unlocking the object, 
because atomic properties will protect the instance variable, but they won't 
protect the contents of the instance variable. @synchronized is the easy way of 
doing this, but depending on your needs, you might need NS(Recursive)Lock 
instead.

Nick Zitzmann
<http://www.chronosnet.com/>

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