I'm completely perplexed by this one.
I have a WordPress account. I am logged in. I visit a new blog that I'm now following and go to make a comment. My WordPress ID appears below the reply text area. I enter my content and then click "Post Comment", but I'm given a login dialog instead. The warning says "You're trying to publish a comment as [name]@gmail.com. You need to log in to that account before you can proceed." And to the right of this is also "You are being asked to login because [name]@gmail.com is used by an account you are not logged into now." But, I am logged in. So I supply my proper login credentials in this dialog, but they are NOT ACCEPTED. Exact same ones that I use when logging into my wordpress dashboard. In fact, I see my WordPress management bar at the top of the browser, despite this conflict of validation.
OK, so I thought it was a cookie problem. I cleared my WordPress cookies, set the browser (Chrome) to accept everything, but the problem persists. I then went to Internet Explorer and tried again. SAME PROBLEM. I am not an idiot. I know how to log in. Am I caught in the Twilight Zone or something? I searched Google but found no recent comments about this kind of issue. I browsed the WordPress support forum and haven't found a post about it.
If anybody has an idea, I'd love to hear it. The blog I'm trying to post to is "ChemistInTheBottle.wordpress.com".