Sorry if this is slightly off-topic, but does anyone know whether there has been an update to Cisco Doc ID 25562, a Best Practices for IOS management which is now 2.5 yrs old? I am looking to put something together for my management about when/how often to upgrade switch and router IOS's on production equipment that isn't experiencing problems. My inclination is "almost never" but the Windows environment has led to a mindset of "patch every month". I know, totally different environments. But the pressure is building.