video window stays always on top

Dear Beagle Board experts,
I am using devkit8000 board. The software details are as below:
1. Kernel : 2.6.37 and angstrom distribution i am using.
2. Video driver: omapfb is my display driver.
3. window manager: metacity
I have successfully ported my linphone, mplayer and other application
and working well.
The windows are pushed back in case static image, or regular window.
but if the video window is there, it always stays on top. Note: The
input focus is perfect, ie.. in case swap the input is received by the
appropriate window.

I hope, it may be bug in x overlay related issue. Please help me to
solve this issue.

Thanks and Regards,