I'm working on a site with a custom theme designed by a developer we worked with a couple of years ago. After making some changes last week (adding picture sliders to home page, inserting a new header, and just adding new content), the site looks messed up in IE8.
I have tried the suggestions from this post: http://ckon.wordpress.com/2009/03/19/how-to-fix-internet-explorer-8/
And inserted the specified code in my header file. I waited an hour, no change. I deactivated all my plugins, one at a time, no change. I updated all plugins, no change. I updated WordPress, no change. I'm at my wits end--any help would be greatly appreciated!