January 2014 update
Updated UEFI firmware, version 2.04.0350, to resolve behavior where the Surface failed to enter sleep while idle, negatively impacting battery life.
My SP2 works nice with this firmware installed, but I hope it will works better!!
It seems like since the update (that I got last week), that my battery life is even better. I'm really loving this Surface Pro 2, even better than the first version.
Tried to change the wallpaper all together on desktop (therfore also in metro) and it hasn't been doing it the last 2 days now. Guess the firmware update made the wallpaper had when installing go a bit weird...