When viewing an individual post on my blog the comments form is not displayed. Clicking on the Comments link at the bottom just reloads the page, but there is no way to enter a comment.
Please note this is a different problem from the many topics that have trouble submitting a comment. In this case no comment can be submitted since there is no form.
I have changed to many different themes. The problem is present on all themes. I've deactivated all plugins, which has no effect. I just upgraded from 2.1 to 2.2 without any change.
I'm no PHP expert, but presumably the comments_template() function in single.php is returning without writing the form or is otherwise broken.
Here's a link from the blog. Try clicking the comment link at the bottom:
Any hints great appreciated! Thanks.