Is this a new issue with 4.2? We haven’t tested that version yet, however I can see 4.2 is available for submission to the app store now so I will upgrade and get back to you with my tests.

I would advise against using any Apple API functions behind FMODs back, because we maintain state about that stuff.

I can confirm this issue with the iOS 4.2, and it is known on the Apple forums, also I have reported the bug on the Apple bug tracker.

Since this is an iOS issue, we will not be taking any action at this stage.