I left-click, with the cursor in a pointing hand shape, on the little blue box that says 'edit' in the stock picture, but nothing happens. How do I change my Avatar's picture? I have attached the file I want to swap in, just for the heck of it.
Try clicking the acutal word "Edit" There are a few boxes around the site that look clickable, but they don't actually do anything.. On several of those, if you click the word "Edit", you get what you expect.
I had the same problem , using latest Firefox on XP. I got round the problem using an Android tablet, using the standard Android browser. It seems to be a bug effecting some browsers.