Hmm. Well that field says 600, which I understand means 10 minutes, yet when I exit media, the TV turns off almost instantly.
I will try to play with it some more this weekend. Also I notice another line there:
"Uses Infrared" and then the number "0" , which I am assuming means off. I wonder if I set that number to be "1" instead, perhaps it may make a difference, as this V is definitely controlled by infrared.
I will do some more messing around with it tomorrow, when I am at home.