I had problems after the update as others of you described, very slow response to everything plus high battery usage. I discovered that removing the 16GB card fixed the problem. I suspect it might have something to do with the size of the card because I have a spare 2GB card laying around from an older phone and it seems to work just fine. I am able to see all the old photos on it and also play the videos on it even though they are a different format, I think.dancedroid Battery usage seems okay for two days now with the big card removed and the smaller one inserted.