I just found the calculation of FocusDistance, Hyperfocual, DOF start/end in the focus menu section. It seems to always show the "infinity" numbers.
After playing around with it I can say it only works correct LiveView.
[OK] In LiveView: It shows and update the correct values when manually focussing or changing the aperture.
[WRONG] Outside of the LiveView (normal viewer) the focus section displays wrong numbers.
If it's not possible to get the current focus distance/aperture values outside of LV it would be helpful to show a info box that this feature will only work in LV.
I'm used the most recent version (2011-10-17) from the mailing list.