Firefox problem: data cell width does not reflect header width

I'm guessing that this has already been addressed but I don't have the time to comb the forum for the answer, that said...

I am creating a Active.Controls.Grid object to show some search results. The results show up fine in IE, but in forefox the size of the data cells do no match their respective grid column headers. It basically smashes all of the data to the left regardless of what column it is in. Resizing the column headers causes the cells to take the correct width.

I just updated my ActiveWidgets to 1.0.1 and I am using Firefox 1.0.4. The examples on this site show up correctly, just not my own code.

What am I doing wrong? What do I have to do to get the grid to look right.