Hi Everyone - I wanted to ask if anyone has had issues with the hinge on their 27inch iMac? I notice while cleaning the screen and applying a little pressure on it, it moves easier than my older 21.5inch iMac. Are these things know to break or get loose over time? I got AppleCare for 3 years but I was wondering if anyone had issues with theirs or if this little bit of movement is normal. Thanks!