the last 3 times ive sat and wrote out a long thread about a game its logged me out because ive taken more than 5 minutes to write it making me lose all ive wrote and i cant be arsed to write it again how do i change this

thanks lads im gonna write them out in note pad or word from now on i think, and i had such a good bruce out rant on the go....only kidding i was canny pleased 1st half cant remember what happend after.....
i shuddered when i read "wilkinson", he's like a skunks repressed childhood memory
the last 3 times ive sat and wrote out a long thread about a game its logged me out because ive taken more than 5 minutes to write it making me lose all ive wrote and i cant be arsed to write it again how do i change this
Just recently wrote a couple of articles only to lose them then couldnt be bothered to do them again.
Odd, using Chrome and Windows 7 I've never been logged out.