To make the point a bit differently, if I read Mudcat at 10PM, then close it and go to bed and open it again at 10AM, I get the same page...my browser loads what is in my cache, NOT what is on the server. I must refresh to see new posts.
   But if I then close the browser at 10:15AM and reopen it at 10:20AM, I STILL see the page from last night, as the cached page has not changed. If I reload it at 10:21, I will then see a NEW cached page for 24 hours. Sometimes cookies get caught in all this and, frustratingly, crumble. This may be the result of cache settings, cookie settings, or both.

Cattail managed to be reset by using a different browser, which, obviously, got the latest settings for everything.