I've got it set to auto-clear every time I close my browser, which I've done several times since it started. I just used the actual button for clearing it now - no apparent effect. And what shows up on the site changes periodically - earlier, the recruiting forum was showing me a cached page of the database backup notice; now it's saying no cached version available.
How about cookies? Particularly any CloudFlare cookies.
"My Hobby: Replacing your soap with gravy" by rtg0922, Doll and Clint "Rawhide" Eastwood by Sneak