I have seen quite a few threads regarding $H*TTY battery life after the update. I recall you relaying this same information to me as a friendly suggestion in another thread and I do appreciate the insight. How ever, I'm just getting through my 3rd factory data reset because of outrageous battery drain. At times it can be random and caused either by 1) the media scan or 2) google maps hogging up the percentage. With ICS, the highest percentage was always phone idle or screen (because either my phone sits or I'm using it for SMS/Gtalk/Facebook/Email). Also, when I do a reboot or a battery pull the phone always reverts back to the samsung keyboard as the default and not SwiftKey. WTF is that all about?
As far as I'm concerned this was a half-baked JB update.

More con than pro. Maybe this is because all of these issues have been fixed with 4.2 and Sammy is just behind the ball with giving us a proper JB update? I'm quite sure I've just about had it with this "official" JB update. Once I find some spare time I'll root this bad boy and flash a custom recovery where I *KNOW* it'll wipe everything properly and not just hiccup along because of corrupt files that got left behind.