Android: Network Radio off before ACTION_SHUTDOWN event.Events order Changed in ICS
public class MyAppShutdown extends BroadcastReceiver{
    private static final String TAG = "MyAppShutdown";
    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub
        Log.v(TAG, "onReceive - ++ ENTER ++");
        if (intent != null && intent.getAction().equals(Intent.ACTION_SHUTDOWN)){
            Log.v(TAG, "onReceive - ***] SHUTDOWN [***");
            // perhaps send a broadcast to your app via intent to perform a log out.
            Intent intent = new Intent();
            intent.addAction("intent.myapp.action.shutdown");
            sendBroadcast(intent);
        }
        Log.v(TAG, "onReceive - ++ LEAVE ++");
    }
}

<receiver android:name=".MyAppShutdown">
    <intent-filter>
         <action android:name="android.intent.action.SHUTDOWN"/>
    </intent-filter>
</receiver>

public class myApp extends Activity{
    private myAppBroadcastRcvr myAppRcvr = new myAppBroadcastRcvr();
    @Override
    public void onCreate(Bundle savedInstanceState){
        IntentFilter filter = new IntentFilter();
        filter.addAction("intent.myapp.action.shutdown");
        registerReceiver(myAppRcvr, filter);
    }
    // Perhaps you have this
    private void LogOff(){
    }
    class myAppBroadcastRcvr extends BroadcastReceiver{
        @Override
        public void onReceive(Context context, Intent intent){
            if (intent.getAction().equals("intent.myapp.action.shutdown")){
                 LogOff();
            }
        }
    }
}