Have you repaired permissions? Or you can change the default for the Kona 2 board from Mac Desktop to Black to stop it from projecting the desktop out on the monitor. If you don't need that function, you can just change it to black.
About the only weirdness i have is that I generally have to log in to my machine twice upon startup whenever the K2 board is set to project the Mac Desktop out to the NTSC monitor. I log in, the desktop appears briefly, then the G5 kicks me back out to the Login screen. I know it's Kona related because this only happens when the Mac desktop is selected on the K2.
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