WordPress Version 3.0.1
Podpress Version 18.104.22.168
..upgraded from a WPMU site running a previous version of PodPress to the current versions of everything.
I now get this warning on the PodPress "General Settings" page:
Warning: constant() [function.constant]: Couldn't find constant MULTISITE in /home/directory/domain.com/wp-content/plugins/podpress/podpress_admin_general_class.php on line 192