I've hooked up a second display to my G5 and am not able to move inDesign (CS Premium) pallets to second display (although, Tool Pallet goes to second display fine). I am able to move pallets in Photoshop and other programs just by dragging across to second monitor.
Any luck with this yet? I've had no problem moving palettes from a left (main) display to a right display. I can either dock the palettes on the right hand side of the left display, or force them to jump to the right hand display.