yh a few people in our computing class have had this problem with their iPhones as well when they plug them into windows pc's to charge up whilst we are doing visual basic work and they lose an hour or two in time, but once they are plugged into their mac's they work just fine. this mite be an issue with certain pc's or charging devices because i know that windows thinks that iPod touch's and iPhones are digital camera's. i don't know about the ac adaptor because my iPod touch doesn't lose time when it is plugged into my external apple one. strange indeed
