Post in any section not showing

All of a sudden I start making posts in my forum and they aren't showing when I click on the category.

And when I deleted a spam post today, I went under the category and it's still there.

Soemthing is wrong! Need help!

Muscle Car Forums - Tech Articles on Mustang, Charger, Camaro

Believe it or not I think it's the piece of this internet explorer browser. I'm at work and they are still using the old IE. When I use the site with firefox and latest IE it works fine. That must be it

What was the version of IE that was not displaying correctly?