[Typo3] Strange error message

[Gert Kaae Hansen]

Hi

I have been using the Direct module on this page fore some time, but 
suddenly i am getting this error message every time i preview the page, 
and it is also present in the news letter

Warning: parse_url(http://http://www.holtum-rejser.dk/index.php?id=367): 
Unable to parse url in 
/usr/local/httpd/htdocs/gkh/holtum-rejser/tslib/class.tslib_content.php 
on line 4847

Warning: session_register(): Cannot send session cookie - headers 
already sent by (output started at 
/usr/local/httpd/htdocs/gkh/holtum-rejser/tslib/class.tslib_content.php:4847) 
in 
/usr/local/httpd/htdocs/gkh/holtum-rejser/typo3conf/ext/de_phpot/res1/phpot/class.tx_dephpot_phpopentracker_container.php 
on line 39

Warning: session_register(): Cannot send session cache limiter - headers 
already sent (output started at 
/usr/local/httpd/htdocs/gkh/holtum-rejser/tslib/class.tslib_content.php:4847) 
in 
/usr/local/httpd/htdocs/gkh/holtum-rejser/typo3conf/ext/de_phpot/res1/phpot/class.tx_dephpot_phpopentracker_container.php 
on line 39

Warning: Cannot modify header information - headers already sent by 
(output started at 
/usr/local/httpd/htdocs/gkh/holtum-rejser/tslib/class.tslib_content.php:4847) 
in /usr/local/httpd/htdocs/gkh/holtum-rejser/tslib/class.tslib_fe.php on 
line 2402

Dose any of you know how to solve this ?

Regards
Gert Kaae Hansen