THREE WEEKS INTO my SonyEricsson Xperia X10 lifestyle, I have data and power warnings to consider. My online control panel with O2-Ireland tells me I'm using an extra 200 MB every week of over-the-air data. This will cost me an extra 16 euros every month if I don't control myself better. I've also discovered several applications that drain the X10's battery so I'm working around them. However, when the day begins with Barney (as in the photo and video at left), I know I won't get more than six hours of use from the phone. I've made an Audioboo about both issues but it suffices to say that if your Android phone feels warm, perhaps it's time to power it down and reboot with fewer processes running. In my case, that means not running Tweetcaster, AroundMe, Layar, Maps or NewsRob after rebooting. There are more details in the audio clip.