Just had the Oops we ran into a problem notification again.  One thing I noticed was that I entered the Forum by clicking on a link in an email to read a notified update.  I read the update post ok, and I noted I had two alerts showing on the alarm bell token.  I clicked on the bell, and got the Ooops popup.  Now, the post #i had originally read was still selected and on my screen.  I closed the post, and the alerts token changed to show only 1 unread notification which was just a response notification from Ellie.  I was now able to click on the alert token, and it worked correctly.  I did not refreah the page as requested, so I must assume that the update of the alert token had done this for me.  Ergo, the problem seems to be occurring when a post is first read, but has not been closed, and thus there is a hidden update request queued that blocks access until the updated post is read and closed.