Hi to everyone, I have this beautiful laptop for three years now, I read that someone else had the same issue during games: someone had problem with the W key that usually is the one used to go forward, it happens when the key stays pushed down for a while (I. E. when you walk ahead for long time) , well, when you release it, the character keeps going forward for some second , above all after a while you are playing and the machine heats up: in my case it happens on the ARROW UP key that I use instead of the W key, but the issue is pretty the same; it seems like that the rubber cup under the key that should pull up the key when released gets a bit "lazy" to get its original shape keeping the conctat on the keyboard circuit until it raise up. 
I put a bit of silicon spray on the rubber cup an under the key and it seems that it got better but still sometimes it has some delay on release.
Anyone had the same problem? what could I do to fix it?, I would like to avoid to buy a new keyboard  that it,s not that cheap,
Thanks in advance,
Romi