I seem to be having this problem too. My avatar is much blurrier than it was
when I uploaded it. It was a small 120 x 120 avatar, so the system didn't shrink it. It was a .PNG image.
You have to be specific where you uploaded it. Did you upload it to the site? Or did you link to an off-site avatar? You can't really tell unless someone says something because
no matter what you did, it gets put on the server.