I have a 24" iMac that just turned a year old yesterday. I do have Apple care and it has been having some problems lately. Firstly I have been noticing some pretty significant burn in issues primarily on the left side. Thats where my ichat normally sits so when on a grey background I can see a burnt in image of my ichat list. There is also a very noticeable line across the top. When I turn down the brightness it also makes an annoying hum that isn't present when at full brightness. Also the speakers will randomly make a high pitched noise which can be resolved by playing some music. and lastly every once in a while my computer will wake up from sleep and the screen will be frozen which requires me to hard shut it down. So what do you think I should do and does it warrant apple care attention?