Can't post a comment here -- dunno why

Why, oh why, can't I post a comment on blogs.perl.org? I'm properly signed in. I read a post, 30 seconds later. 30 seconds later, I click the button at the bottom of the post in order to post a reply. I fill in the form with my post. Then I get this error:

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Comment Submission Error

Your comment submission failed for the following reasons: Your session has expired. Please sign in again to comment.

Return to the original entry.

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And there is no avoiding it, even after signing in again.

Thanks very much for any help you can provide.…

RSS feed for blogs.perl.org

Wondering if there is an RSS feed for all new entries on blogs.perl.org.