Lightbox 2 conflict with jCarousel

I’m experiencing the weirdest thing. I’m using WP 2.8.6 with the following plugins: Lightbox 2 v. 2.8.2 and jCarousel Lite v. 1.0.1 with jQuery 1.2.

I’m using this on two different web-sites with a jCarousel slideshow on the frontpage. The problem is that jCarousel is only working on one of them. The problem seems to be that Lightbox on the frontpage loads all attached scripts and also writes in the head-tag:

<!-- begin lightbox scripts -->
	<script type="text/javascript">
    //<![CDATA[
    document.write('<link rel="stylesheet" href="https://localhost:8888/mysite/wp-content/plugins/lightbox-2/Themes/White/lightbox.css" type="text/css" media="screen" />');
    //]]>
    </script>
	<!-- end lightbox scripts -->

I don’t get how the working site avoids that. I’ve tried to disable lightbox and install again, and I’ve also upgraded to the latest version. Nothing helps. Please somebody help. Thank you!