[jQuery] label fires click function twice

[Michael Nosal]

If I have a div with a label and input in it:
<div id="tab">
  <input type="radio" id="r1" value="foo">
  <label for="r1">My Label</label>
</div>

and I add a click handler like so:
$('r1').click(function() {
  window.console.log("hello");
});

Clicking the div or the radio button gets one call to the click function.
Clicking the label element results in the click function being called twice.
Known? Unknown? Workaround?
Using jquery 1.2.1

--Mike N.