After the Kit Kat update, I was having some serious battery drain. I ended up booting into recovery mode and clearing the cache. That seemed to help dramatically. I've been doing some minor phone use for the past 3 hours and I've only gone down 4%. As mentioned above, the stock browser still seems to be draining power more than it should. Is there a way to uninstall the stock browser? The standard uninstall process has the uninstall button grayed out. I would definitely switch to another browser if I can get rid of this one.