So, we can now see a message saying:
Your session has expired.
Sign in again.
Is it possible to keep us logged in?
No auto 'session expiry'?
**** EDIT ****
This automatic session expiration is driving me crazy....
I was in the middle of replying to a post when I received a work-related phone call.
When I got back to my post, I completed my reply and hit 'Post'.