I have the x51v which only has 1 battery and has the ability to fully power off if you push and hold the power key. You have to go in to the settings and set it up to do it. I treat it much the same way as my home computer. If I am not going to be using it for the next 8-10 hours I turn it off.(gasp!)
:jd: This is my first pc handheld so I am not use to the older versions where you lost everything if you powered off. Its not that big of a deal to push and hold but..... It will probably take a while for the software guys to come up with a hack for it.