On a fresh install of Joomla! 1.5.6 and only this module added, the display works fine on Internet Explorer 7.

But on Mozilla Firefox 3, the title of the next item appears just after the end of where the previous article has been.

I had to add style="position:absolute;" on line 24 of default.php to achieve the desired results, like IE7's.

Other than that, the extension works great and doesn't take any time at all to figure out how to use it.