WP Super Cache is working as intended for pages and posts on all of my three sites using multisite in WP 3.0.
Except that feeds are not cached.
Turning on debugging, I get messages like:
10:28:13 /index.php?ak_action=idptt_js_admin Cookie detected: wordpress_logged_in_5b003114262c58d03b5b91643d7bfa37
10:48:43 /comments/feed/ Supercache disabled: GET or feed detected or disabled by config.
and similar crap. This using curl on separate hosts. (My Vienna RSS reaser uses a 304 request rather than a 200, but this is not true for all clients.)
Even if I somehow have a cookie, this should not be the case for everyone else. There is in fact no "feed" directory in "wp-content/cache/supercache/mydomain", but there are directories for "2010", "2009", "page" and so on, as expected.
Am I missing something here, or what gives?