Windows Forms Font Scaling problem

Question

Hello,
        I am facing a very peculiar problem with Windows Forms. I have a Windows application developed in C#.NET. It connects to a mdb database to get some default values for the UI. The problem is that when the Windows Font Size is changed from 90 dpi to 120 dpi the scaling of the form and the controls over it does not happen properly. However incase the mdb database is deleted then the form and the controls scale correctly to the changed dpi. Can anyone tell me what is the relation between font size and the underlying database? I am not able to figure out. Any help will be appreciable.
Thanks.