AIR mobile app for Android becoming unresponsive when application is left idle

[AIRdeveloper]

I am having an issue with an AIR mobile application for Android becoming unresponsive.  We currently enable wake-lock to prevent the device from sleeping while the application is running. As long as the user is interacting with the application there seems to be no issue, but if they do not interact with the application for ~10 minutes or more the app becomes completely unresponive.  It is important that the app remain visible and the screen awake even when the user is not constantly interacting with the app. 

ANRs are not issued from the android system and the Android home button also seems to become less than responsive, often taking several presses to get out of the frozen AIR app.  I have profiled the app extensively with the flashbuilder profiler and simulator, there are no blatant memory leaks or performance issues. 

Anyone have any idea what the issue could be?  Are there any known issues with device idle state and AIR? This problem has become a major issue for our application. 

Thank you.

[mola2alex]

What version of AIR are you using or does it matter?  My apps seem to come back from background or idle with no issue.

[AIRdeveloper]

We are using AIR 3.6