I have the new greentrack theme on here and I have done a bit of editing to get the gravatars back. I had a problem with one of the posts where everything was ran off the left side of the page. I am not sure really why since all of the resulting HTML looked ok. I went back in and edited the post and saved it again and everything seems fine.
If you run into any other posts that have that problem, please let me know so that I can see if that will fix them too.