Possible explanation: The last thread you appear to have posted in had 1249 comments. Right under where it says Sort by: Top, I did see a box that said Show: 500 and under that, a link that said Load all Comments. If it was only showing the top 500 comments, a new comment might not be visible by default.
Can you see your post after clicking the Load all Comments link, or is it still not visible?
Thank you! I can see my posts now when following those instructions. I confess, I didn't want to post an entire discussion article just to ask this question, but I was going crazy trying to figure it out.
I am having some trouble seeing my responses to a post after refreshing an article (but they still show up in the right-hand sidebar). Anyone else having this problem? I am using Firefox 16.0.2. Is this a bug or a "feature" (I think some of us are all too aware of the sometimes blurry distinction...)?