All the icons for the threads are either orange or grey with a padlock; except for the threads I have replied to which are an envelope with a green and white arrow.
Edit: That means I have read the post?
I am getting confused now as there are at least two different orange icons with different padlocks.
Jude updated the icons yesterday with new ones to fit our theme, but it looks as if he’s missed some (ie there isn’t a new icon for a thread with a new reply). I’ve just flicked him an email.