I'm using a desk top computer. I've cleared everything I could think of, this has been going on for months. I tried sbmitting this in a "quick reply". The message I received was "Your session has timed out out while you were composing this post and you were logged out you must log in again to continue."
I know my "2cents" usually isn't worth a penny, but once in a while I like to add it. Very frustrating.