new comments are highlighted into the single forums but not in the main page /forum

I noticed that the new comments (aka posts) are highlighted using a yellow icon into the forum belongs its but only the new arguments are highlighted on the main forum page (/forum).
So If I want to known where (and if) new comments are added since my last visit I need to open each forum!!

I think we need to add a similar "new" message for new posts too: we can simply add the two numbers #new_args + #new_comments or show two different messages, for instance (2 new posts, 4 new args)