Hi, I have a problem:
When I post comments on my own blog, the default avatar is shown, even though I have a gravatar.
The e-mail address I use with the blog is the same that I use for gravatar.com.
I also installed the Gravatar2 plugin and that made no difference.
Edit: Nevermind - it seems the reason was that I had only created that Gravatar E-mail address a few minutes earlier and it took some time to "show up".