JQuery Cycle Plugin - FireFox - Transition bug

JQuery Cycle Plugin - FireFox - Transition bug

I'm using the Cycle plugin  to implement a slideshow of divs on my page. Here's my html:
<div class="slideshow" id="slideshow">
            <div id="nav"></div>

            <div id="slide1" class="slide">
                <div class="slideImage">
                    <img src="Images/ist2_4878226-graphs-and-charts.jpg" />
                </div>
                <div class="slideContent">
                    <h2>bla bla bal s</h2>
                    <ul>
                        <li>the dog ran over the hill</li>
                        <li>the dog ran over the hill</li>
                        <li>the dog ran over the hill</li>
                        <li>the dog ran over the hill</li>
                        <li>the dog ran over the hill</li>
                    </ul>
                </div>
            </div>
            <div id="slide2" class="slide">
                <div class="slideImage">
                    <img src="Images/ist2_6476620-business-meeting.jpg" />
                </div>
                <div class="slideContent">
                    <p class="testimonial">the dog ran over the hill</p>
                    <p class="testimonial">Mike Smith,<br />
                        Director, Financial Planning and Corporate Compliance,<br />
                       XYZ Facility
                    </p>
                </div>
            </div> ..... I have two more .slide divs
Here's my plugin call:
 $(function() {
            //set up slideshow
            $('.slideshow').cycle({
                fx: 'wipe',
                timeout: 8000,
                pager: '#nav',
                slideExpr: '.slide'

            });

In IE 8, this works fine. However, in Firefox 3.6, when the slides transition, the text of the previous div (whatever's in the div with class=slideContent) appears overwritten by the text of the next div. When the transition is over, all is fine. Has anyone experienced something like this? Please advise.

Thanks!