Sometimes - in about 1/20 cases when we very often use ajax request function on success don't work - requested data are return but $('#id2').html(r) is not executed and ajax.error is not executed as well. Changing options like async, cache, timeout doesn't help.

$.ajax( {

url: url,

data: { a: "a", b: b, c: c },

type: 'POST',

success:

function (r) {

$('#id2').html(r);

},

error: function (XMLHttpRequest, textStatus, errorThrown) {

alert(XMLHttpRequest);

alert(textStatus);

alert(errorThrown);

}

} );

Any ideas what is wrong or what can i do about it?