Larian Studios Forums General About this website Previewing my posts before I post them

The last few times I've tried to preview my posts on this forum, my web-browser has given me an error. Specifically, HTTP 500 Server Error.

I've found that if I uncheck the Preview my Post box, I can actually post.

I'm using Internet Explorer 7 on a Windows XP Pro Service Pack 2 machine. If need be, I could add in my DXdiag as well.