I've cleared the cache [actually done automatically when I close the browser as well as history, etc.] and don't use the browser password storage. Still, no joy.I also have been experiencing some weirdness on the boards, of late.
In the past, I've found success by manually logging out, clearing the cache (including all cookies and stored passwords), and then manually logging in.
However, sometimes, it has been this site's server cache that needs maintenance.
Wish us luck ...