I have a site that is fully-functional in Firefox 3 and 4, Opera 10 and 11, Chrome, and Safari. Internet Explorer 7 and 8 have trouble with the AJAX. I have a JavaScript function, a, that was using jQuery's $.getJSON to get data from the same server using PHP, and the results are great everywhere but in IE. In the success part of $.getJSON, there are 3 calls to another function, b. Function b calls function a, but not with IE. I tried replacing getJSON with ajax, setting async: false, but that did not make a difference in IE. I noticed the problem when $.ajaxStop() was not being called. What ideas do you have that might help? Many of our users use IE, so requiring a different browser is not an option. MTS