I cannot pinpoint which day exactly, but the forum seems to be stuck without removing those old posts from the list. The only thing that happened that I know of is that FireFox updated.
I usually open this forum, lick on "Show unread posts since last visit", read those I have an interest in, and exit the site. The next time I check, the unread list has been erased and only the new messages show up, which is what I have expected and become used to.
Lately, I've had more and more messages accumulate as 'unread' and won't be zeroed out when I exit.
The only thing that I can think of is that FireFox did an update.
Has anyone else experienced this problem?
Dale