Below is the error code from device. The code is fairly straight forward. I have a multi-dimensional table (10x10) which I access on button press to show or hide images using isVisible.
Sep 21 14:10:14 unknown SpringBoard[510] : Received memory warning. Level=1
Sep 21 14:10:14 unknown MobileMail[519] : Received memory warning. Level=1
Sep 21 14:10:14 unknown Maze[556] : Received memory warning. Level=1
Sep 21 14:10:16 unknown MobileStorageMounter[555] : (0x3f99148c) idle_timer_callback: Exiting after idle timeout
Sep 21 14:10:40 unknown configd[25] : jetsam: kernel memory event (90), free: 430, active: 3986, inactive: 2178, purgeable: 0, wired: 42448
Sep 21 14:10:40 unknown SpringBoard[510] : Received memory warning. Level=2
Sep 21 14:10:40 unknown MobileMail[519] : Received memory warning. Level=2
Sep 21 14:10:40 unknown Maze[556] : Received memory warning. Level=2K<?xml