I'm seeing a weird battery drain - anyone else? Or suggestions to fix? Symptoms - Wednesday afternoonI took it off the charger and it was at 100%. I used it maybe a couple of times Wednesday night for very short periods, and don't think I used it at all on Thursday. Thursday night I opened it and it was at 9%! Thinking I possibly could have left it on and the screen didn't time out, I checked About -> Battery. It showed several hours of no drain after I took it off the charger, then a steady drain down to the 9%. According to 'what's using the battery', 51% was Android System, the rest was mostly screen, with a bit of data. It's been in airplane mode with syncing turned off the whole time. Any ideas?