After a while of use on my Samsung Ativ S, under Photos the Skydrive tiles turn grey and I can no longer pin them to the start screen. Anyone have an idea on how to refresh them? I tried uninstalling Skydrive, reboot, re-install. That did not help. Does the Samsung Ativ S store the tmp files for the tiles on the microSD card? Anyone have an idea? I have had this effect on two Ativ S phones using the same microSD card, but formatted on the Ativ S.