>I have set up a test using base classes and I am still gettng this annoying effect.
>
>I have a combo box in a grid that allows the user to choose various units (CM,MM,Feet) etc
>
>The sparse property is set to .f.
>
>When ever the user clicks onto a unit to edit it the grids activerow property appears to be switching to the last last row in the grid.
>
>I am on the brink of abandoning ever using combo boxes in grids ever again.
>
>Has anyone any thoughts on this.

Maybe I do not understand the exact problem, but have you removed the border of the combo [BorderStyle = 0], and set its SpecialEffect property to plain?