I've been waiting for someone else to post about this, but since no one has, I will. The last couple of weeks I've been unable to see my personal avatar. I've gone and re-uploaded it, and uploaded ones of different sizes, and the little image placeholder box changes sizes but it won't display the actual image. I think it's affected everyone else who uses a custom avatar as well.
I'd be willing to offer up a number of my own avatar images to add to the site's pre-defined avatar library if that's an option too.