Magnus,
Thank your for responding. Exportforce is correct, disabling the TY hack did not fix the problem. But I do have more info for you to consider. We migrated our forum to vB from Snitz using the vB import tools. I got to wondering if somehow the posts that were migrated somehow got set to the same time stamp or something and your hack possibly could not tell which one was first. So, I went into the AdminCP and changed the Hack setting to "Last Post", and everything works fine!!! I set it to "First Unread Post" and again, works fine. But when I changed it back to "First Post", the intermitent working/non-working problem I described in my post above occurred again.
The good news: I can leave it on "Last Post" without confusing my users.
The bad news: There is still a Gremlin!
I hope this additional information helps you identify the problem as this is a terrific feature! :up:Thanks,
KF