SWT Layout spoils in time

Hi there,

Hope can find help. I have provided a customer with a SWT interfaced applications. They are using it on Windows XP and they told me recently that the layout spoils (for example, the button that needs to be under the text field comes next to it) when left open for 2-3 hours. In the beginning, the interface is all normal and I have no idea what happens to the interface to cause that.

Thank you in advance.

Gokhan