After updating to iWeb 1.1 and publishing a photo page, your slideshow may not launch when viewing the site.
Update to iWeb 1.1.1 or later to address this.
If you're not able to update right away, you can prevent this by avoiding apostrophes (single quotation mark) in your photo page names (for example, Carrie's Photos).
You can change a page name by double clicking it in the Site Organizer and typing a new name.
Note: You must republish your photos page after changing the page name in order to regain the Slideshow functionality in your published page.