Hello guys, I need some help in deciding whether I should go for T400s with touch or not. What I am mainly worried about is the weight. Probably pretty stupid thing to wonder but does having touch increase the weight of the system? Also, will having touch introduce any additional problems? I will be using Ubuntu on it most of the time so I am not even sure if touch works on that, but I like to have the option. Is it better to leave it out if I am not going to be using it much anyway? What you...