Nginx Doesn't Log FastCGI Errors

[kustodian]

I have recently migrated my Nginx+PHP-FPM server from a Centos 5 to a
Centos 6 server and I basically migrated the whole configuration from
the old server to the new one with minor changes. I compiled the newest
versions of Nginx (1.0.14) and PHP (5.3.10), Centos 5 had 1.0.2 and
5.3.2.

The problem is that Nginx doesn't log FastCGI errors in its error.log,
it's logging it's own errors without a problem. I'm talking about the
errors which look like this:

"2012/03/28 07:56:01 [error] 14919#0: *697095886 FastCGI sent in stderr:
"CSRF state token does not match one provided" while reading response
header from upstream..."

I tried to change many things, but I can't make the FastCGI errors to be
logged in the Nginx error.log.

nginx.conf: http://pastebin.com/ABMm0c5h
php-fpm.conf: http://pastebin.com/kFuztqXN
php.ini loggin section: http://pastebin.com/bVWdTgCi

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,224536,224536#msg-224536