The comment problem continues. I am sorry to say that even our temporary solution, where previously approved commenters would continue to be able to post, has not worked. At the moment I am periodically scanning the unapproved comments, most of which are spam, and manually approving valid comments as I find them. Please accept the possibility that if your comment has not yet appeared, it will do so eventually, but it might take a couple of days for this to happen. The good news is that new commenters will be able to post, though it will take time to get approved.
I apologize for this problem. Hopefully all will fixed in a couple of days.