All- Just got my refurbed late 2010 27" i7; scored a "free" 2TB upgrade. I have one issue with the screen that I cannot figure out. There is one small dark spot just below and left of center. It is shaped like a pixel but is a bit larger. I initially thought it was a single dead pixel. However, it appears to be in a different plane than the screen. If I put the pointer next to it then move my head around, I can make it disappear behind the pointer. Oddly, it appears to be behind the plane of the screen (although this is hard to tell and could be an illusion). It really doesn't look like dust - I will pull the glass and clean, but wanted to get any thoughts about what it might be. Otherwise this machine is awesome ... Thanks in advance.