Hopefully it's all cleared up. Did you do a meter calibration to clear up the mysterious battery issues?
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I hope that fixed your issues! I did wipe my SD card during my trouble shooting...didn't know if there was a corrupt file on there that the phone kept trying to read. My thoughts were if it was smart enough to know it was corrupt it should be smart enough to know not to try to read it over and over and over. Guess not huh lol. Anyway, please post back after you turn on WiFi and see how your battery life is. I truly hope you have found the issue! Don't know about you, but if something is not running right, it bugs me until I figure out why its not running right.
So I am almost positive the issue has to do with WiFi. When I turn it off, I don't get any "keep awake" time under kernel, or at least barely any. When WiFi is on, the keep awake time goes up and my battery dies much quicker. For now I guess I will just have to keep WiFi off for most of the time, but it would be nice if I could find a fix for this.
I have seen wifi issues with JB but mostly they were inability to connect or stay connected. I'll keep my eyes peeled for any options/solution others may have found. One positive thing - you know what the culprit is.