I'm experiencing intermittent hard freezing of multiple apps on UITextFields, UITextViews and UISearchBars becomingFirstResponder. The freeze happens before the keyboard comes onto the screen. The app does eventually seem to recover, but takes a very long time. Most users will loose patience before this happens however.
The common factor between the apps seems to be registering for UIKeyboardWillShowNotifications, but a trivial amount of work is done in the selectors registered for this notification.
Is anyone else seeing this and/or found a solution?