Sony Ericsson Xperia X10 :: Touch Screen And Original Headset Come With Box

SE and all X10 user, it's so great after the x10 had officially released the androind 2.1 OS,but there are few problems that i had experienced which really irritates me and disappointed me.

1) i'm not sure anyone of you has experience what i'm having here. while i'm typing the message, most of the time the qwerty keyboard's key will stuck and keep pressing even though my fingers are not touching on the screen, e.g while pressing the spacebar, it wil keep continue pressing... the most irritates me while i'm pressing backspace key it's stuck and what i've type previously all gone just that way.

2) i'm used to typing with chinese sms, while the words that i want to use was not in the small bar, there's a key to show all the words i want from the page. i scroll down and saw the words i want, but it's unresponding toward my touch, not only the words i want, but also the remaining words below the page.. why? wish you guys will be able to understand what i'm trying to say.

3) my headset was come in the box originally with my x10i, during the android 1.6 OS the button on the mic is able to answer/hang up the call.. but after updated to android 2.2, that button is not anymore useful,why?