Description of problem: This happens even when a '0' is entered properly in the form fields. Somehow, on submission, the values are getting undefined and the checks are failing the submission. If you set both to something like 1 or greater then it will pass and submit any other changed. Version-Release number of selected component (if applicable): 2.18rc3
Test comment
Incorrect return line in detaint_natural causing a value of 0 to be considered invalid. Fixed now.