You will need to reset your preferences for opting out of the ads, that software link was broken and needs to be reset.
Also, all the threads that went to the first unread post will need to be reset again and then it will work as it did before.
The software was updated overnight. The Watched Forum is now on the forum blue bar on the right side.
There is now a blank line above the threads in a forum, you can click on that to start a new thread.