Since installing IE10, all my input tags (text, checkbox, textarea) etc.. have a simple 1 pixel black border around instead of the 3d look.
It will change to the 3D look of I change the background-color style. See screen captures below.
While it doesn't cause any problems with the way the pages work, It just makes the pages look totally different.
I tried here first, but they directed me here.
IE9:
IE10: