I just double checked and the pets one is working
I'm not sure if this has something to do with the server move + V3, but on the headshot editor page, I get this:

(the focus editor is working, but the HA image is broken in the back. The focus seems to be saving correctly - the location on the HA - but can only go to 0,0 /etc because the height/width of a proper HA isn't there)
(my HA image loads fine everywhere else)

I was just about to create a topic on this very issue. I get the same images a I'm currently using the most recent version of Google Chrome.
If it helps, it looks like it's trying to get the image as http://avatar.subeta.net/275424 rather than http://avatar.subeta.net/275424.png (someone forgot to add the .png?)

This is currently happening to me too, I have no idea when it started though. And the pet head shot editor works fine. I'm using the latest version of firefox.
I'm using google chrome and having the same problem. I filed a ticket but had no further info for me and suggested I post here. :0

Same issue, I've tried it on both the latest versions of Chrome and Firefox, no dice.
I noticed this too on firefox. I also noticed when I'm not logged in the front page has a broken image instead of someone's HA. I think both problems are connected to this.