>I tried to get in touch with the sysadmin at TIBALT.SUPERNET.AB.CA,
>without luck.

I think he's gone...  Fingering him gets this:
mango:~> finger sorgi@TIBALT.SUPERNET.AB.CA
[TIBALT.SUPERNET.AB.CA]
Login name: !orgi                       In real life: Tony Sorgi
Directory: /tmp                         Shell: /bin/lock_out
Never logged in.
No Plan.

I especially love his shell...