Please, please (please) help. I've searched through the forums and found many people asking for help with the same issue but no solutions that work for my site.
FireFox (Win, Mac, and Linux) has a long-standing bug that can cause problems with side-by-side floated containers whose content is filled by WP. In the past, I've been able to work around the bug, but I can't figure it out this time.
The site is: http://designorati.com/ Visit it in ANY other browser and it works great--the main "guts" content column floats left, the sidebar floats right. In FireFox, however, the main "guts" column stacks UNDER the sidebar.