Hi there,
leave the Avatars enabled in the Discussion settings, and add this PHP snippet to your site:
function disable_comment_avatar($avatar, $id_or_email, $size, $default, $alt)
{
global $in_comment_loop;
if(isset($in_comment_loop))
{
if($in_comment_loop == true)
{
return "<img alt='{$alt}' src='' class='avatar avatar-{$size} photo' height='{$size}' width='{$size}' />";
}
else
{
return $avatar;
}
}
else
{
return $avatar;
}
}
add_filter("get_avatar" , "disable_comment_avatar" , 1, 5);