I see this in your .htaccess file
You need to remove your custom PHP. The rules in your .htaccess force discussiononair.com to run on your custom build of PHP 5.2. So you just need to remove the .htaccess and the cgi-bin folder and you'll be good to go!
PS. You might have to wait for old PHP5.chi processes to die off, but it shouldn't be more than 10-15 minutes