"iso-8859-9" bunu dener misiniz birde..
yine olmadı

karakter setinden değil sanırım sorun.
htaccess'den olabilir mi?
htaccess adlı üyeden alıntı:
# Prevent viewing of .htaccess file
<Files .htaccess>
order allow,deny
deny from all
</Files>
# Set the default handler
DirectoryIndex index.php
RewriteRule ^(contact|tell-a-friend).html$ index.php?cmd=$1
RewriteRule ^index.html$ index.php
RewriteRule ^preview-(.*)\.html$ index.php?cmd=preview&img=$1
RewriteRule ^contact-(.*)\.html$ index.php?cmd=contact&recipe=$1
RewriteRule ^friend-(.*)\.html$ index.php?cmd=friend&recipe=$1
RewriteRule ^print-(.*)\.html$ index.php?cmd=print&recipe=$1
# URL rewrite rules
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-l
RewriteRule ^(.*)$ index.php [QSA,L]
</IfModule>
# Prevent session urls appearing
php_value session.use_only_cookies 1
php_value session.use_trans_sid 0