Strict Standards: Redefining already defined constructor for class Net_URL in /home/httpd/vhosts/fan-forum.ch/httpdocs/administrator/components/com_sef/sef.class.php on line 618

Error: headers already sent in sef.class.php on line 618.
Stopped at line 887 in joomsef.php: HEADERS ALREADY SENT (200)
URL=http://www.fan-forum.ch/index.php?&task=list&mode=0&catid=-1&navstart=0:
OPTION=: