The white apple remote which came with my 2007 24" iMac randomly stops working on my 2010 15" 2.4 MBP during my slide show which is very annoying, I have to switch out of keynote presentation to system preference panal and click on the pair botton under Security settings to get it back to work again. (I teach so it's very distracting for both my students and me), it happened once yesterday during class I thought it was the battery so I went out and got a new one during class break. Guess what, it happened twice today too. I checked with Photo Booth by clicking the remote directly into the iSight camera to make sure that it has no problem emitting infrared beam. What's weird is it had no problem working on my wife's 13" 2010 MBP what so ever (I used to take her computer to class before I got my 15" last week). Anyone can offer me any help or has ever gotten in to situations like this? I'd hate to go back to the apple store for a exchange since the new 15" runs pretty well and the both apple stores in Beijing are always packed. Thanks in advance! oh and also, ever since 10.6.5 update I have to restart my computer before every class to get it to recognize a projector, any one knows how to fix this too?