Anyone noticing battery drain issues after the MD4 update? I used to get 16-20 hours with 3 hours of screen on prior to the update, and now it seems to be draining at a faster rate (getting 12-14 with 2 hours screen on). I am not rooted running stock Touch Wiz and on wifi most of the time. All my other settings are equal to before with only my google email and calendar being synched.