I worked at a bank where the network admin was a top-notch anal retentive. I was the
support tech/security admin and the passwords to all 60 computers in the building
had the same 5 letter pasword. Let me put it this way, it was such an easy password
that it could have been discovered after 5 minutes of guessing. .My concerns about this
went unheeded and after a month of cutting my legs out from under me, the admin got me
fired for trying to "subvert" his computer setup.

Lesson learned: "Make sure your admin cares about your welfare and not his job security."