I\'m doing a simple test on $(window).height() and I\'m getting a value of 2602 on a screen resolution of 1366 x 768.
jQuery(document).ready(function($){
Actually, this was a result of a hidden div element on my page. I had a thickbox link that would pull this hidden content. Removing this fixed the jQuery.width()!
Surprising, not sure if helpful, but is the answer indeed.