[hmls]

I am wondering, how many of you actually turn the Cybook off when they tell you to turn off electronic devices? I have taken two trips with my Cybook so far and on this last trip I just couldn't bring myself to stop reading and turn it off. While we are on the subject, does anyone know the basis of this rule? I get why cell phones might be an issue (and didn't Mythbusters bust that even?), but are iPods, handheld games, ebook readers, etc really going to have a detrimental effect on aircraft instruments?