^You didn't set the zero point. That number is memorized in the computer for each wheel size. It can NOT be changed (but it can be fooled )
What you enter last night is your computing measurement number (not even the actual measurement) That's why you're not at standard ride height now since it's NOT the actual measurement.
sockethead, I'm not sure about your situation. I remembered vaguely something in DIS stating that the calibration will be carried out after (or during) normal driving. Did you do back-to-back calibration without driving the X? In my case, the computer did lower right after the calibration procedure and I double check with the tape measure. I lowered it 1" all-around.

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00 E39 DINAN S1 //M5 (82k miles)
06 E53 DINAN 4.8iS, born 2/18/2006 (126k miles) http://www.xoutpost.com/bmw-sav-foru...s-my-dslr.html
90 Straman Z32 TwinTurbo Convertible, (1 of 44 ever made) 5 speed, 444rwhp/451rwtq
01 360 Novitec Spider F1 (26k miles)