Quick question for folks with an iPod (isn't that most of us?): Now that it's winter, I've noticed that my 3G iPod's screen sometimes gets screwy when it's outside (it's been about 30 lately). I know that happens to displays when they get cold. So my question is twofold I suppose. 1) Does that do permanent damage to the screen? 2) Is it bad for my iPod to get too cold? Should I not walk to class with my iPod until March? I keep it in my pocket, but it still gets cold, obviously. Any advice, anecdotal or advice based on actual facts, would be appreciated.