Wrong user name for network connection

[Bill Cheeseman]

I have several Macs on my home network. All of them appear in the "Shared"
section of the Finder sidebar on every other machine, and my keychain
contains the password for each. So, when I click once on a machine in the
sidebar, the "Connecting as..." legend appars, and a moment later it changes
to "Connected as: <username>" without presenting a dialog to enter the
password. Great! That's just as it should be.

However, one machine always connects as my .Mac email address
("myusername at mac.com") instead of connecting as the machine's short username
("myusername"). This happens when I am connecting from any other machine on
the network. I can disconnect the rogue machine and click it again in the
sidebar, then enter my short username manually in the connection dialog that
comes up, and that works -- I am connected as my short username. But if I
disconnect again, then click that machine in the sidebar again, it once more
connects as my .Mac email address.

What can I change so that a click will automatically connect to the rogue
machine using my short username? I've checked all the keychain entries using
Keychain Access on all machines, and I don't see the .Mac email address in
any of them. I've checked the Accounts prefpane in System Preferences on all
machines, and the long and short user names are correct (i.e., they contain
no reference to the .Mac email address).

Connecting to the rogue machine as my .Mac email address works perfectly
well. But I see this as an esthetic problem. It disturbs my sense of the
order of the universe. Even worse, it keeps reminding me that I don't
understand how this works.

--

Bill Cheeseman - bill at cheeseman.name
Quechee Software, Quechee, Vermont, USA
www.quecheesoftware.com

PreFab Software - www.prefabsoftware.com