I noticed that as I click through the blog posts, sometimes my picture and profile info change into the "log in" block at the top. When I try to comment as a guest on these posts (because I don't appear to be logged in) my comment doesn't show up after I hit submit. But, this is only happening on a few blog posts - the "worst colors" post is the one I noticed it on, but as I clicked through, several before that one had the issue as well. By the time I get to the booties post I'm logged in again...