Had a Kindle for one month and the screen started acting up. Half the screen went blank and the other half showed text from the book i'd been reading. Tried resetting. No good. Was able to get replacement. Made me very happy but concerned that I'd only had it for a short time before it went nutty. How long before this one does the same?My daughter has the same problem with hers. She had the device turned off but the screen still reads Amazon Kindle. Gonna have to call tech support again!!! #%$@%^