[Another] The form has become outdated. Copy any unsaved work in the form below and then reload this page.

Hi there - I see there have been 3-4 posts about this problem and none *appear* to have been resolved – at least the solution has not been posted to those threads.  So here is another thread about the same issue.

Problem: When I edit a blog post or any other kind of format and attempt to save the changes, I get the following message:

“The form has become outdated. Copy any unsaved work in the form below and then reload this page.”

1) I can confirm it happens even while *not* logged in elsewhere.  So, it seems unrelated to being simultaneously logged in in two places as suggested in one thread.

2) It occurs over and over if I edit multiple pages.

3) It occurs when editing after a long absence *and* when editing on consecutive days.

4) It occurs very quickly, seemingly between 2-5 minutes.

Did fixing the page caching work as suggested on one thread?

Thanks, 

-S