DHCP fix for Linino Locks up after ~12-24 hours.
http://forum.arduino.cc/index.php?topic=227693.msg1652097#msg1652097
Use static IP address for Linino Locks up after ~12-24 hours.
http://forum.arduino.cc/index.php?topic=227693.msg1650457#msg1650457
CPU of Yun has hardware bug, work around.
http://forum.arduino.cc/index.php?topic=227693.msg1651836#msg1651836
Turn off /Disable Wifi if you do not use it.
http://forum.arduino.cc/index.php?topic=188821.msg1399080#msg1399080