twentyeleven theme in WordPress - Nginx as reverse proxy to Apache2

[Loggy]

The comment issue remains even with the WordPress Nginx proxy cache
integrator plugin activated and the comments approved.  They are not visible
until the page of posts has expired.:(  

The plugin sets X-Accel-Expires to 0 where wordpress_comment_author or
wordpress_wp-postpass cookies are set, thus switching off caching for that
page and renewing the cache copy.

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,230916,230920#msg-230920