If there are folks reading this blog who have been having Disqus problems, I'd be happy to assist you in trying to resolve those if you would please email me (there's an email link at my profile page here). You can, if you wish, also tweet your problem directly to the Disqus help desk at Twitter, using this link.
What Disqus will need from you is a clear statement of what happens when, say, you try to log in to comment and the system will not let you in: what message do you receive? What operating system are you using? Are you using a handheld device or a laptop-desktop computer? Do you have a screenshot of the message you receive?
All of these details will be helpful to Disqus, and, as I say, Disqus is responsive and quick to try to resolve problems of this sort, I've found. I apologize if any of you have encountered such problems. I do want to help, and I value your comments here.