Amazon has announced in one of it forums that it is replacing the UNlighted cover for anyone who wants to return it. It was in a thread on Kindleboards.
http://www.amazon.com/cover-causes-K...&cdSort=newest
"Last edited by the author 1 hour ago
The Amazon Kindle team says:
(AMAZON OFFICIAL)
There have been some forum discussions regarding the non-lighted Kindle cover, and our engineering team is looking into this. Regardless, if anyone is having any problem with an Amazon-manufactured Kindle cover, please call us at 877-453-4512 begin_of_the_skype_highlighting 877-453-4512 end_of_the_skype_highlighting or 206-922-0844 begin_of_the_skype_highlighting 206-922-0844 end_of_the_skype_highlighting. We will be pleased to replace it for free with a different cover or accept a return for a full refund, no matter when the cover was purchased. "