I've upgraded mysql from 4.1.x to 5.1.x, and php from 5.1.x to 5.2.x.

The first exposed a bug in my head, so I RTFM ("F" == "fine") and did the right thing, go back to the 4.1 database, import it to 5.0 version of mysql, then to a 5.1 version. In passing I'd also made another error, involving the civicrm database, which I've also corrected.

The second exposed a bug in drupal, having to do with how session state (login status) is kept, so I upgraded from drupal-4.7.4, which has this not so charming feature, to drupal-4.7.x-dev, which is fixed.

It was a problem that I don't control the mainecommonwealth.com zone, or the www. subzone, as I could have hidden my errors more quickly on a machine I've not yet upgraded, and looked, well, not as wicked dumb.