I might have come across a theme bug (Mixfolio) All author comments for my blog are hidden via the blog posts I also noticed that if I reply by my admin dashboard the comment remains hidden on the post page as well but if I write the comment from the post page it appears. This appears to be affecting all my posts on my blog.
I have cleared my cookies and browser cache I even restarted Firefox as well with no improvement.
I also check the blog through chrome and the author comments are hidden as well on chrome.
Firefox version 13.0.1
blog url http://dailyapsects.wordpress.com
Example url of hidden author comments http://dailyaspects.wordpress.com/2012/06/18/embrace-your-calling/comment-page-1/#comment-641
screenshot url http://i.imgur.com/UbYg9.png
P.s. my comments display in the dashboard as well the post editor