First, thanks to all who responded to my query.
rd> I don't know if drush is supposed to be able to detect that it is rd> in a multi-site and do the update on all the installations at once.
js> Perhaps someone could check their database logs and see whether it js> happens, and if not file a "feature request?"
I saw nothing in the logs. Also, the Drupal "status" and "updates" reports indicated that each DB needed to be updated (which I manually did).
js> In the mean time, under Linux/MAC OS etc, the find command coupled js> with a little shell scripting would work well.
Not sure what you mean here ...
Use 'find' and the shell to do what?
Sorry if I'm being dumb/dense,
-Kenneth