همون مشکل Warning: Cannot modify header information

[hossein.shokrzadeh]

سلام
دو تا مامبو بر روی یک هاست نصب کردم، یکی انگلیسی یکی فارسی :
دو تا دیتابیس و ...
مامبوی انگلیسیم مشکلی نداره به شکر خدا، ولی مامبوی فارسی رو که میزنم، warning زیر رو میده، تو بخش مدیریت نیست ها، تو frontend سایت هست

Warning: Cannot modify header information - headers already sent by (output started at /home/fess/public_html/fa/includes/database.php:2096) in /home/fess/public_html/fa/includes/core.classes.php on line 5370

Warning: Cannot modify header information - headers already sent by (output started at /home/fess/public_html/fa/includes/database.php:2096) in /home/fess/public_html/fa/includes/core.classes.php on line 4927

Warning: Cannot modify header information - headers already sent by (output started at /home/fess/public_html/fa/includes/database.php:2096) in /home/fess/public_html/fa/includes/core.classes.php on line 1152

Warning: Cannot modify header information - headers already sent by (output started at /home/fess/public_html/fa/includes/database.php:2096) in /home/fess/public_html/fa/includes/core.classes.php on line 1154

Warning: Cannot modify header information - headers already sent by (output started at /home/fess/public_html/fa/includes/database.php:2096) in /home/fess/public_html/fa/includes/core.classes.php on line 1156

Warning: Cannot modify header information - headers already sent by (output started at /home/fess/public_html/fa/includes/database.php:2096) in /home/fess/public_html/fa/includes/core.classes.php on line 1158

Warning: Cannot modify header information - headers already sent by (output started at /home/fess/public_html/fa/includes/database.php:2096) in /home/fess/public_html/fa/includes/core.classes.php on line 1160

سرچ که کردم، قبلا جاهایی فرموده بودین مشکل از هاسته، ولی اگه از هاست باشه که باید اون یکی مامبو هم مشکل پیدا کنه؟ :-\ نه؟

ممنون میشم راهنمایی کنید، یا علی