"GET vs. POST would have nothing to do with this" Sure it could.....
http://classicasp.aspfaq.com/forms/what-is-the-limit-on-querystring/get/url-parameters.html Granted i do not know if newer browser versions have raised or removed that cap, but it's still something to consider To original poster: it would take a minute to switch from $.getJSON and it's default GET behavior to the more generic $.ajax() method and setting method to POST
