I tried adding onkeyup="return false;" to the field. Doesn't seem to work though.
The solution I came up with is to add this in the config array. onkeyup: function(element) { if ($(element).attr('name') != 'username') { $.validator.defaults.onkeyup.apply(this,arguments); } } It'd be much easier to have onkeyup: false in the rules array :) lol