I think there is some kind of unwanted interaction between Zebra mode and the DOF calculator (tested on S3 IS):
1) setting the 'Zebra mode' (any) shows the "old" Depth-of-Field 'R1/R2' and Hyperfocal distance 'DOF/HYP' too.
2) setting 'Zebra mode style 1-2' or 'Solid' causes the DOF calculator to malfunction and to display wrong numbers, even the new additional values like 'real ISO' etc. are not updated anymore.
Unsetting the 'Zebra mode', all get back to normality.
Can anybody try the same settings, just to confirm the presence of this malfunction?