Windows password fail: sUpercalifragilisticeXpialidocious23ballmer is not complex enough

Like most modern system that require authentication, Microsoft Windows has a password complexity setting that prevents users picking ludicrously weak passwords like "12345" or their own name. Typically an administrator can create a policy to dictate the strength of password required depending on the sensitivity of the environment and the nature of the data that the device contains. This can normally be summed up in a few brief rules - for example, must be minimum 8 characters, must contain both alphabetic and numeric characters. Sometimes they may require upper and lower case characters or even "special characters". Earlier today I was changing a few password that had expired and thoughtlessly entered a new password of mrports727somethingelse (not the real password!). Most systems accepted this including Windows 7 however, one of my other systems rejected it because it contained my username 'mrports'. "Fair enough", I thought. Schoolboy error. ...