[jQuery] click fires twice

[jQuery] click fires twice


both jquery-1.3.1 and 1.2.6 on FF
No beginner here, but I'm absolutely stumped. The following function
is firing twice. There are no other event handlers involved (and,
anyway, it's only whatever I put in this function that runs). I've
found a couple of messages online about similar problems but nothing
that seems to apply here.
$('#newsletter_posts_list a').click(function(e)
{
    alert(this.href);
    e.stopPropagation();
    return false;
});
The stopPropagation call was the last thing I tried. No dice.
I've checked the rendered source and nothing seems amiss. The links
have only an href and title.
Please help my sanity!