Fancybox making an unwanted synchronous request?

I have a formular that I want to submit via ajax. So I am using jquery form plugin . ok this works great.

I am getting html page as result and want to pass it to fancybox (v2.0) . but if i'm going to open fancybox i get this famous chrome warning:

Synchronous XMLHttpRequest on the main thread is deprecated due to its detrimental effects on the end user. For more help, check out http://xhr.spec.whatwg.org/ .

hence I am wondering about two things:

• Why is this warning showing up, because if fancybox is not using my ajax request, async = false
  
  or the like. well this is as far as i know and i checked the fancybox source code so ...

• why am i getting the following error when i try to submit the form a second time?

  Uncaught TypeError: $ (...). ajaxSubmit is not a function.

  I have a feeling that after the alert is raised, the function that triggers the alert is removed from the context and therefore cannot be called ...?!

If I don't use fancybox - when I, for example, just call console.log(result)

- I don't get the error. so there is something wrong with fancybox i guess.

Why don't I immediately call the url of the page I want to load in fancybox content like regular people do? good because fancybox has no way of passing post data to url, so I need to submit a form. sending data-data is out of the question.

here is the problematic code :)

$(domObject).ajaxSubmit({
    dataType: "html",
    success:  function(result) {
        $.fancybox.open({
            padding:    0,
            margin:     0,
            content:    result,
            autoSize:   false
        });
    }
});