title: KVO and Bindings problems using my own (not the shared) NSUserDefaults object
body: <p>I'm subclassing NSUserDefaults in my application. A side effect of this is I can't use <code>[NSUserDefaults sharedUserDefaults]</code>, I have to have a class method to provide my own static defaults object. This isn't been a problem in code, but it's proving tricky now that I'm hooking up the preferences UI with bindings.</p>
  
  <p>The shared NSUserDefaultsController uses the shared defaults, so that's out. Instead I can create my own defaults controller in my window controller, provide it with my static defaults object, and hook up my bindings to that. This doesn't fully work though. When I tried using KVO on my defaults object I didn't receive any change notifications. I tried this again with a regular NSUserDefaults object (not a subclass) and again, no KVO notifications. Substituting in the shared defaults object, KVO works exactly how I'd expect.</p>
  
  <p>Does anyone have any ideas on how I can get bindings and KVO to work when I'm not using the shared defaults?</p>