I've changed my outfit (you can see the new items I am supposed to be wearing on my profile), and the new HA appears in both the Wardrobe and in the "Your Avatar" part of my dash. However, my previous HA is what shows up in the hover image, on the forums, and on my profile. I changed it an hour ago. It should have updated by now.

Well, it worked after an hour. It was supposed to look like this. But when I came back an hour later after changing it it still had its older configuration. It might happen again the next time I change it. It shouldn't take this long to process.