I see. Now that you’ve mentioned that changed behavior in WP 3.0, does it mean that the hacks you’ve shown in this post are no longer necessary because they’re ‘built into’ WP 3.0?
maybe that’s the case. Try asking about this at the WordPress forums.
This is puzzling because if it were so, how come most WordPress sites don’t display the “in reply to” info in the threaded comments.
Maybe the WordPress themes have to be modified to support this. Are there WordPress 3.0 themes?