Spinning Pinwheel of death on iPhone? I am a developer working on an in house application.  I have gotten several complaints about getting the Spinning pinwheel in the iOS application I maintain.  Can anyone tell me if this is actually something that can happen on iOS (not OS X.  I know this is common on the desktop OS when an application becomes unresponsive to input.) I have done a great deal of searching on Google and am coming up empty handed.  I'm beginning to wonder about the accuracy of this bug report.
I don't believe that there is any spinning pinwheels in iOS. What your users are likely reporting is a UIActivityView spinning round and round and don't understand the difference between the two (you know how some users are...).