Redmond is opening up and offering a few facts, stats, and tips around its first update to Windows Phone 7 -- an update that didn't go smoothly for everyone -- and it sounds like there are at least three distinct failure modes, two of which are pretty simple to fix. The company figures that somewhere around 10 percent of users attempting the upgrade encountered a problem, but of those, "nearly half" failed because they lacked a proper internet connection or enough disk space (
