Illustrator :: One Inch Square Box Does Not Draw One Inch

If I try to draw a square box in any size, illustator does not make it square.
 
For example, if I select the Rectangle Tool, click in the art space and set the rectangle to one inch by one inch, I get a box that is 1.0003 by 1.0003
 
Here is a screen shot of what I am getting.
 
This is also happening to any rectangle and circle.
 
Even if I hold down shift to keep the preportions lock, it still happens.
 
I have check and nothing is snapping or set to snap.
 
This is a major issue for me as I use illustator for creating dielines and those dielines need to be very accurate.