Warning: Cannot modify header information - headers already sent by (output started at /home/kanit/domains/public_html/wp-content/db-config.php:1) in /home/kanit/domains/public_html/wp-includes/pluggable.php on line 881 i would like to do 16db for wpmu and i get this problem when i use www. with my domain how to fix this problem i use wp 3.4.1
basically this problem was occur when extra space came on wp-config.php and funcation.php file so please remove the space...
this often happens due yo some other warning/notice spitted out before any other page content sent, you may need to check the html source actually to see it