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I've finally seen the ghosting that others have been vocal about, and I believe that it is due to use of a poorly-designed refresh technique on the KT.
On my Nook Touch, when you turn the page, it is obvious that they rewrite the text by inverting/overwriting each character with a thicker-stroke character - black then white - you see an instantaneous flash of "hollow" letters, which then disappear before the new page is written.
This completely eliminates the ghosting issue on normal text, although it still occasionally appears when you go to a graphic page, such as the library.
The KT does not appear to do this, and the result is horrible broken appearance of letters where the previous test overlapped. IMHO, this is completely unacceptable, as it destroys the appearance of the text after a page turn - even once.
To get around this, I've set the page refresh interval to each page (1). You get the black flash (which I don't mind much) which slows down page refresh somewhat, but at least the text remains readable.
I sure hope the Kobo guys can fix this issue, as it does not compare well to the Nook Touch in this respect.
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