Happens to me also. If I am writing something long, I usually do a note and copy and paste across. Nothing more infuriating than loosing a post when it does that.
I have found that this happens when there is a change in WiFi or data signal even slight.
Even more frustrating when the forum shows you are still online. Which is the forum showing activity in the last half hour, and because the forum hasn't received a positive logout, gets its knickers in a twist.
Mick - The grit in the underpants of life! Always happy to spare the bytes Apparently my mind works in mysterious ways
TOTM needs YOU support YOUR TOTM competition, I'm doing my part, are YOU?
So, a slight break or large drop in signal can cause this.
Or if you have both WiFi and data switched on like I do, a swap to the stronger signal of the two will cause this.
Mick - The grit in the underpants of life! Always happy to spare the bytes Apparently my mind works in mysterious ways
TOTM needs YOU support YOUR TOTM competition, I'm doing my part, are YOU?