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.