I have Cpanel server, and got this, without doing any modification to GMail or any other thing. What may cause this? It only occurs when doing sending of mail and accessing some folders.
[Wed Jul 6 01:16:32 2005] [error] [client ] Premature end of script headers: /home//mail/user/webmail.cgi
[Wed Jul 6 01:16:32 2005] [error] [client ] Premature end of script headers: /home//mail/user/webmail.cgi