Avatar/Gravatar only posting for the admin

Hi all..

On my blog, the only gravatar showing is the admin…I think out of 100+ posts, only one other persons showed.

here’s the blog post

http://bit.ly/ReO3oU

here’s the pastebin with the function.php on top and the comments.php on the bottom, as it shoots all the avatar stuff to function.php

http://pastebin.com/tTuQKauj

I have gravatar selected in dashboard>settings>discussion….

thanks for any help!