On three similarly configured multisite 3.0.4 installations (same plugins on them all) the default WP page manager has quit listing pages on two of the sites while the third site works fine.
The page qty links at the top of the page (All-Published-Trash) correctly display the quantity of pages but no list of pages is displayed below.
The pages exist and can be accessed and edited via other means. New pages can be added but also do not appear in the page manager.
Where the page listing would normally display the list of pages only a single narrow gray line appears. No table framework or anything else appears in this location as it does on a site that has no actual pages to display.
Where should I even look for the source of such an issue?
Thanks for any assistance!