Upside down, Upside down!

How come the video feed in the ARToolkit sample applications is upside down
on my Windows XP with a Logitech QuickC am?

From:	"Carl Kenner" <carl_kenner@h ..........>	Received:	Jul 14, 2004
To	<artoolkit@h ..................>
Subject:	Upside down, Upside down!
How come the video feed in the ARToolkit sample applications is upside down on my Windows XP with a Logitech QuickC am?