I notice that I donot have al of the features in my update. The gallery update and split screen as well as the left side menu colunm is not available.
My battery life has been AWFUL since the update.
4h 39m on battery right now, 31% left, have barely used it (wrote a reasonably long email, a couple texts, and two brief phone calls).
Screen (1h 33m on) is 77% of my drain, messaging 10%, calls 7%, standby 4%, idle 3%.
I have all power saving modes enabled except for CPU usage restriction, I have black background screens everywhere possible, and auto-brightness.
Of course, none of this should even be mentioned because it is immensely worse than it was before the update to 4.1. The same time of day, with similar usage, would have left me at around 70% before.
I had the exact same problem, my battery was draining 3 - 4 times faster than before the update. I went in to the Aplication Manager and disabled the included Samsung bloatware (the update adds even more) and now my battery life is so much better.
Better than it was before the update.