UPDATE: As most of you know, we haven't yet solved the blog's sign-in difficulties. But one possible solution would be to end authentication of commenters. We'd have to use a filter to keep out spambots if went to open posting. For this different process to work, we might have to require an e-mail address. It would not be visible to the public at large. Many other blogs use open commenting with a required e-mail. The email requirement seems to serve, as our registration current does, to limit the basest inclinations of most commenters.
I'd be interested in feedback on such a change, presuming you are able to do so. or write me at firstname.lastname@example.org
PS -- Movable Type is promising a fix that it will implement over a several-hour period on Friday, Dec. 12. Fingers crossed.