I want to see if there is a co-relation between the production week, factory, and how many problems you have, if any. I need everybody who has an iPT4, even if you have no problems whatsoever, to do some things for me. First, go to http://www.powerbookmedic.com/identify-mac-serial.php. Copy and paste the production week, production number, and also state the first 2 letters of your serial. For instance, mine is: Production Week: 28 (July) Production Number: 9475 C3 Then, state how many problems you have, or if its perfect. For instance, my problems are: Light leak Wifi clicking sound State only problems that are significant to the device functionality or appearance. Having a tiny bit of misaligned plastic strip is NOT a problem. Hopefully, with this data we will be able to piece together information and see if the problems are only present in certain batches.