Sorry guys, I get another Weird question for you xD When I was typing, there would be rigid vibration respond. However, when I type really fast, there will be another sound other than vibration. It's more like click sound. It's easy to notice since the pitch will be a little higher. just wondering if you guys have same experience? I am somehow concerned about it. It"s a bit Annoying. Also when I try to get the bookmark in the browser, it's kinda laggy. Thanks!