Mac Mini with no monitor controlled via VNC - video output corrupt

Hi,
I have a Mini running with no monitor, mouse or keyboard connected (it's used as a Server for my music library) that I control via VNC on my Mac Book.
Everything works fine until I ever have to reboot the Mini. After the reboot, logging into the machine via VNC shows all the video corrupt (jagged horizontal lines through the whole display making it totally undreadable).
This happens both with ARD and Chicken of the VNC (tried both in case it was an issue with the VNC software).
To fix it I have to connect a monitor to the Mini. Then I can just unplug the monitor again and the video output via VNC is fixed.
Anyone have any ideas? It's driving me nuts
Thanks,
Neil

After some more searching I stumbled across this thread on another forum;
http://www.macusenet.com/archive/index-t-75211.html
It seems that the problem can be avoided by connecting the DVI-S-Video adapter that ships with the Mini.

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