I accidentally visited the SMDB site this afternoon at 4:31, my time. I realized my error and went some where else. I did not visit any message boards.
Nevertheless, all messages, on all boards, were marked as read. Anything posted since then is marked as not read, of course.
I always thought you had to visit a board, then leave, in order for the messages to be marked as read. And I thought you had to visit every board, then leave, in order for the message FOR THAT BOARD to be marked as read.
I know that we have had problems before, but this seems to be some new thing, or I just don’t understand the mechanism vBulletin uses to decide when a message has been read.