Sure enough it's blank. Could it be the index.html or index.php file isn't in your public_html directory? Does it have correct permissions?
The site's back up! No clue what it was, but it's ok now!
Oh comon now HBP, you knew exactly what was wrong, rofl!
For some reason his index.php file was blank. I went to his forums and they worked fine, so when he checked his index file it was completely blank!
Once again HBP, you FAIL