I notice considerable dark screen ghosting when going from screensaver to text - need to use Alt-G to clean up the background - esp those screensavers with lots of black - so far the worst is the Virginia Woolf image. But -- Alt-G does work on the DX.
Switching from portrait to landscape is fairly fast - but it seems to take twice as long to switch back to portrait. Also, if the DX goes to sleep in landscape mode, there is a considerable delay when woken up before it moves back to portrait mode.
"If possible please provide picture of Mr. Chickens new home or field. Proof that you will not eat him would help too." (Craigslist)