@snood,
It only took a minute for my avatar to load to both the profile and the posts, but it took me a while to log in to gravatar with my nickname (there's already an 'ossobuco'! Who on earth would want such a dumb nickname?). And then it took me another while to figure how to get the whole avatar photo in the square. (I ended up starting at the top right corner, and pulling the "frame" diagonally to the bottom left corner, if that helps anyone.)