I'm using Small Potato's WPDesigner theme (http://www.wpdesigner.com/2007/06/28/wpdesigner5-wordpress-theme/) for a couple of sites, and something strange happens whenever two or more sentences within a single paragraph are italicized - the right sidebar gets pushed down below the center column, over to the left.
Strangely, the em tag - which is the one causing the problem - isn't even defined in the theme's style sheet, which makes me think it's something bigger than just this theme.
I have posted this to the theme's support forum, but no luck. Any thoughts? Could this be some holistic WP error when it hits two sets of em tags in a single p tag?