I just upgraded to 2.1 on my iPhone 3g, and since then my battery will show up as 100% for hours and hours, then suddenly drop. Just today for example. It was at 100% all day.. (I use BossPrefs numberic display) and then the next time i check it says 54.. check a few minutes later, 23.. wait another 5-10 minutes and check again, now it's at 5% battery left. My friend's 3g does the same exact thing since the 2.1 FW upgrade. Any way to fix this at all? Thanks.