simply question have you restarted the device? because android os seems to consumes a lot of power. You also should install wakelock detector from playstore and look what app consumes so much power
Yes, I restart approx. every 2-3 weeks. I have betterbatterystats, but didn't find anything using too much power... But on graph (in my previous post) it is visible that the consumption is bigger with Wifi turned on (Wifi used only for email sync).