Windows Form TitleBar (Formborderstyle=none) Problem

Hello guys,
I have developed a splash screen (startup screen) in my
application by setting the FormBorderStyle property to 'None' and
Docking the image to 'Fill' the entire form.In Windows Xp (only) Title
bar of the form appears some times. Almost 10/100 attempts, although
the form stlyle is borderless, but why this title bar appears only the
few times. :mad:

*Note: this title bar does not comes up every time , but at very few
times.
Anbody who has faced this problem or can help me out of this issue,
will be highly appreciated.

Thanks in advance
A.R. Qureshi