I just updated to iOS 6 from 5.1 and tested my web site (built with jqm). The main page displays fine. If I enter a value into a value into a text box and press my SEARCH button, I get my Ajax spinner and then the new page displays only the word "undefined" at the top. Anyone else see anything like this yet?
EDIT: It appears to be all pages that respond to form input (I am trapping the onsubmit and validating the fields)