XFileSharing Pro - Apache Error Log

[bosal]

Hi,
I get this annoying error in my Apache Error Log:

[Mon Dec 15 17:15:05 2008] [error] [client 81.190.46.44] Premature end of script headers: index.cgi

Every time user visits my site. How to fix it ?

[PilgrimX182]

Everytime? But page is showing fine? Cause this error should cause 500 error.

What's in access_log? Probably there're some weird subrequests.

[bosal]

Where can i read the access log ?

[PilgrimX182]

Usually it's same folder as error_log.
Don't ask me, it's your server