Originally Posted by NiLuJe
@elchamaco: That's interesting, because there's indeed a bit of hackery in place for this exact thing (the first sleep cycle after a change in last book opened), at least on some models. Can't remember if I enabled it for the K3, but will check!
Which exact Kindle model/FW version are you using? And approximately how many books are there on it, total?
Welcome back NiLuJe. I have elchamaco's same symptoms. My Kindle Keyboard runs firmware 3.4