Hi,
Thankyou for writing Minotaur. I have installed it at our site and made a few modifications to make it work in our environment. I've attached the new scripts in case you're interested.
I've split it into two files so that the passwords are hidden from the end users, so anyone can trace a MAC address. I've also modified the logic to cope with switch stacks with redundant paths, and IP phones. Also, once its found the device it prints out some useful information for that port.
Thanks again,
Paul.