>I've added a checkbox to a grid column which i want to be unbound. I Set bound to .F., sparse to .F.
>
>When moving through the grid with the up arrow or down arrow the next checkbox's value in the grid will change to the previous rows checkbox value.
>
>Another odd behavior, On clicking the checkbox, i usually have to click the checkbox twice to make it change.
>
>I've tried coding some reverse logic fixes in some of the checkbox's methods (interactivechange,keypress,gotfocus) with no luck.

First thing, I always put checkboxes in containers for grids, for several reasons, one of which is that it reduces some odd behaviors.

Second, what are you trying to do with the checkbox? That might help someone to answer more easily.