Some Unread Posts Not Bolded?

[#1]

Am I going mad or are only some unread posts coming up in bold when I look at the forum indexes now?

[#2]

I'm not sure why you think any unread posts should come up bold. The only posts which display as bold are the sticky topics.
Unread posts are indicated by the before the title.
TIP: Clicking the takes you to the first unread reply in the topic.

[#3]

Ah, ok, I think I'm confusing this place with Vbulletin.