Those who manage large installed bases of Macs need to maintain one or more local administrative accounts on the machines, for remote administration, maintenance or troubleshooting. But, it can be undesirable to list an obvious administrator account in the Loginwindow; that same account hangs in the Fast User Switching menu, and in the Accounts Preference Pane. What to do? Much experimentation, and some lucky finds on the Internet, have turned up the configuration to hide a user account on 10.5, and in later versions of 10.4. In early versions of Tiger, it was easy to hide an administrator account. As per this hint, adding the array HiddenUsersList to com.apple.loginwindow with the account or accounts to be hidden was enough. But, with Leopard, this is no longer sufficient. Accounts can be hidden well enough using a HiddenUsersList entry, but the login window and...

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