After I succesfully revived my N9 by resetting The Security Code and installing PR 1.3 in the same go I have an issue now. The phone works in much the same way as before but seems to go in "Battery-drain" mode for no obvious reason lately. I have a habit of putting the phone down screen side down as not to scratch the camera bit. This also switches off the display which I imagined saves extra battery live. However. I've realised that some how the phone does not go to "sleep" when on its belly, that is screen side down.
Does your N9 also has trouble sleeping face down?