Datacolor User to User Support Group.

I've recently used the Spyder 3 Pro to calibrate my iMac and Macbook Pro and am concerned 
that they may now have a magenta cast to them. This is my first time calibrating monitors 
and I'm wondering if my eyes are just playing tricks on me or if I did something incorrectly. Is 
there a way of double checking that the calibration is correct?

Thanks,

-Heath