I just tested our SystemEvents sample code on build 1034 on iPad Mini running 6.1 and suspend/resumes events are working fine.
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Console log from iPad Mini:
<<< Home Button pressed >>>
Feb 25 14:52:41 iPadMini1-iOS601 SystemEvents[2332] : system, applicationSuspend
Feb 25 14:52:41 iPadMini1-iOS601 SystemEvents[2332] : Previous event type: applicationResume
Feb 25 14:52:43 iPadMini1-iOS601 SystemEvents[2332] : onOrientationEvent: orientation, portrait
<<< App Restarted >>>
Feb 25 14:52:43 iPadMini1-iOS601 SystemEvents[2332] : system, applicationResume
Feb 25 14:52:43 iPadMini1-iOS601 SystemEvents[2332] : Previous event type: applicationSuspend
Feb 25 14:52:44 iPadMini1-iOS601 SystemEvents[2332] : onOrientationEvent: orientation, faceUp
[/lua] [import]uid: 7559 topic_id: 36137 reply_id: 144203[/import]