Yeah - there need to be separate icons for:
Hot thread, no new posts, you have posted
Hot thread, no new posts, you have not posted
Hot thread, new posts, you have posted
Hot thread, new posts, you have not posted
Only threads you've posted to should have the white box.
And I'll echo the confusion about the new posts and no new posts. Under the envelope system, the colour/no colour immediately distinguished new posts; it was the shape that indicated a hot thread.
Now, we have a no-colour icon indicating new posts, and a coloured icon indicating a hot thread with no new posts... and it's awfully confusing.
Especially since the colours of the new posts and no-new-posts versions are so similar
Can we have the shades of yellow representing "New Posts" and "Hot, New Posts", with the shades of grey representing "No New Posts" and "Hot, No New Posts" to more closely approximate what people are used to?
(And finally, I agree about the arrows for Go To New Post and Go To Most Recent Post - they work better than the mini-globes.)
-Hyp.