This is what I get:
Server error!
The server encountered an internal error and was unable to complete your request.
Error message:
Premature end of script headers: webscr
If you think this is a server error, please contact the webmaster
Error 500
www.paypal.com
Apache/2.0.40 (Unix) mod_ssl/2.0.40 OpenSSL/0.9.6e DAV/2