Why expect anything else from an upgrade of Internet Explorer! This morning it deciding to break a lot of my website navigation systems, on many of my higher end websites! I’d like to just expect IE9 to render websites correctly but being a web designer, you can’t leave things like that to chance.
The issue ended up being that I was Using Cufon Fonts for most of the navigation menu’s for the sites that appeared to be rendering incorrectly. Please contact me if your website is not rendering correctly.
If so, and you’re running a version of Cufon pre 1.09i, then none of your custom fonts will show up in IE9. I’m not referring to just the custom font not showing, I mean all the text that you use cufon for, will not display in IE9.
There are a few fixes but this is what worked for me. Just update to the latest version of Cufon and you’ll be fine.
Further Reading: Why Internet Explorer 9 is a web designers Nightmare!