I've noticed the last few days that my phone usage goes up quote a bit while it's supposedly asleep. I went to bed around midnight last night, the battery was around 75% and usage was at 5.5 hours (everything on except 3G and wifi connected to my home network). Woke up this morning around 7:30 and the battery was at about 33% but the usage was at 12 hours! What could it have been doing that it was at least a little awake for pretty much the entire night and how do I make sure that doesn't happen anymore? I get pretty good battery life (especially since I turned off 3G because my reception at home is so poor--I turn it on when I need it but mostly just leave it off, for now) but I would love to figure out why sometimes the phone isn't sleeping when I think it is.