If you're experiencing problems with leaving comments on others blogs (ie. they're not showing up after posting them, even without comment moderation), OR if you're being emailed that someone's posted a comment on your blog but on the actual site the comment isn't there (and wasn't deleted by the user), you're not alone.
Hundreds of others are reporting problems and Google is investigating the issue. Just thought you might like to know! Feel free to post a comment and let me know if you're experiencing anything like this - I have been. Of course I can't guarantee anyone else but me will see your comment until it gets fixed. It seems kind of random. It doesn't appear to be browser specific, cache, or cookie related. Probably something on the server side they broke when trying to fancy up their templates I reckon.
Update: Just to add, for example, Christian commented on the last post here before this. I cannot see this, but I can if I go into the Blogger dashboard, go to edit posts, and from there choose to view the particular post. Bah. Check it out if you're experiencing the problem although YMMV.
Another update: It seems if you click on the post's title itself, you can see the comments, whereas if you just go to the main site of the blog, you may or may not see comments as existing.
Preparing to Descend
3 hours ago