I performed the 12.0.1 update manually using the .dmg I downloaded. In
addition to not updating the version of Entourage, the update does not
appear when I click "View Installed Updates" in the AutoUpdate app.
I'm not sure whether this is designed behavior (since I didn't use
AutoUpdate to get the update) but it seems sort of broken that this list
would not include an update regardless of the manner of installation.