The pending approval indicator could use some improvement as it's not really clear if it's part of the topic title or an icon. Before it was in a triangle so it was more distinct. The reported post indicator is just an exclamation mark but it is also red so it's a little more distinct.

http://area51.phpbb.com/phpBB/viewtopic.php?f=81&t=45671&start=90#p284371

Attachment 1 shows the current state and issue.
Attachment 2 shows a proposed solution.