Yikes! I thought I had everything working fine, but just discovered that there was a glitch in my conditional avatar tag added to ThemeMeme Aperio Prototype to take advantage of WordPress 2.5. If you weren’t using WordPress 2.5, you’d notice that comments look very broken.
This should fix it. Sorry for the back-to-back updates.
I’ve also removed the gravatar code from the comment form. It was displaying the gravatar of the last, not the current, commenter.
Grab the latest version here.