Weird visual editor problem for posts and pages (screenshot)

Hey I’m new here but not to wordpress.

I thought it would be the best place to ask for help.. I’m having a weird issue with one of my sites where nothing shows up in my visual editor for posts and pages.

This is somewhat annoying, but I’m sure it can be fixed somehow.

Here is a screenshot I uploaded to imageshack for reference:
http://img156.imageshack.us/i/screenshot20110309at106.png/

I tried resetting my visual editor in the profile menu, I deactivated plugins, upgraded the plugins, reset my cache, nothing seems to have helped.

Thanks in advance to anyone who can offer me some advice on how to correct this. 🙂