jQuery's delegate conflict with another delegate in IE

It seems that in IE, some delegates may somehow cause another delegate to fail to work.

This is one possible case:

<html>
 <head>
  <script src='jquery-1.4.2.min.js'></script>
  <script>
   $(function() {
    $('#main')
    .delegate('div', 'click', function() {
     alert('on div!');
    })
    .delegate('[name=first]', 'change', function() {
     alert('first!');
    })
    .delegate('[name=second]', 'change', function() {
     alert('second!');
    })
    ;
   });
  </script>
 </head>
 <body>
  <div id="main">
   <input name="first" />
   <input name="second" type="checkbox" />
   <div>Test</div>
  </div>
 </body>
</html>

In this particular case, the handler for the checkbox won't fire.

As usual, the problem doesn't show up in other browsers.

Changing the call orders may solve an issue , but at the risk of causing another. Note that the delegate works on mutually exclusive elements so the order should be irrelevant.

What causes this?

Solution

It seems that the problem has been resolved in the latest version of jQuery or Internet-Explorer (as of this writing, 1.5 and 9, respectively).