When I enter values in the last row of my DataGridView, it moves up, revealing a soft grey underbelly. I don't want the rows to move, and I don't know why they do.
To see what the grid looks like at first, and then how it looks when entering data into the bottom row, see http://warbler.posterous.com/the-slippery-row
There's a panel behind the DataGridView, but it's not grey; its backcolor is "Moccasin," so it's not the panel that's being seen (the background color of the DataGridView is Gainsboro, but the cells I populate it with are white).