If you've been in that many times, ask them for a replacement. There is something wrong with your hardware. That frequency of the spinning ball is not normal.
By the way, they know your name because you make an appointment and it's on your records. ;^)>
True....except that they knew my name when I came by to look at a new iphone. Seriously, should I insist on a new computer? I have a 3 year warranty. I've just been letting them tinker with it